Home / 288,000.20-432,000.30-155,289.80

Finding the Fourth Proportional to 288,000.20, 432,000.30 and 155,289.80

Calculator

Solution

The fourth proportional to 288,000.20, 432,000.30 and 155,289.80 is: 232,934.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,000.20 : 432,000.30 = 155,289.80 : x
  2. Step 2: Convert to fraction form
    288,000.20/432,000.30 = 155,289.80/x
  3. Step 3: Cross multiply
    288,000.20x = 432,000.30 × 155,289.80
  4. Step 4: Simplify right side
    288,000.20x = 67,085,240,186.94
  5. Step 5: Solve for x
    x = 67,085,240,186.94/288,000.20
  6. Step 6: Final answer
    x = 232,934.70

Related Problems

Find fourth proportional to 144,000.10, 216,000.15 and 77,644.90
Half scale
Find fourth proportional to 576,000.40, 864,000.60 and 310,579.60
Double scale
Find fourth proportional to 288,001.20, 432,001.80 and 155,290.80
Similar ratio
Find fourth proportional to 432,000.30, 648,000.45 and 232,934.70
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.