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Finding the Fourth Proportional to 288,986.80, 433,480.20 and 177,012.40

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Solution

The fourth proportional to 288,986.80, 433,480.20 and 177,012.40 is: 265,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,986.80 : 433,480.20 = 177,012.40 : x
  2. Step 2: Convert to fraction form
    288,986.80/433,480.20 = 177,012.40/x
  3. Step 3: Cross multiply
    288,986.80x = 433,480.20 × 177,012.40
  4. Step 4: Simplify right side
    288,986.80x = 76,731,370,554.48
  5. Step 5: Solve for x
    x = 76,731,370,554.48/288,986.80
  6. Step 6: Final answer
    x = 265,518.60

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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.