Home / 487,387.40-731,081.10-132,445.40

Finding the Fourth Proportional to 487,387.40, 731,081.10 and 132,445.40

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Solution

The fourth proportional to 487,387.40, 731,081.10 and 132,445.40 is: 198,668.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,387.40 : 731,081.10 = 132,445.40 : x
  2. Step 2: Convert to fraction form
    487,387.40/731,081.10 = 132,445.40/x
  3. Step 3: Cross multiply
    487,387.40x = 731,081.10 × 132,445.40
  4. Step 4: Simplify right side
    487,387.40x = 96,828,328,721.94
  5. Step 5: Solve for x
    x = 96,828,328,721.94/487,387.40
  6. Step 6: Final answer
    x = 198,668.10

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Double scale
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Similar ratio
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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.