Home / 257,315.20-355,089.60-142,592.80

Finding the Fourth Proportional to 257,315.20, 355,089.60 and 142,592.80

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Solution

The fourth proportional to 257,315.20, 355,089.60 and 142,592.80 is: 196,775.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,315.20 : 355,089.60 = 142,592.80 : x
  2. Step 2: Convert to fraction form
    257,315.20/355,089.60 = 142,592.80/x
  3. Step 3: Cross multiply
    257,315.20x = 355,089.60 × 142,592.80
  4. Step 4: Simplify right side
    257,315.20x = 50,633,220,314.88
  5. Step 5: Solve for x
    x = 50,633,220,314.88/257,315.20
  6. Step 6: Final answer
    x = 196,775.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.