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Finding the Fourth Proportional to 487,200.90, 730,801.35 and 132,258.90

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Solution

The fourth proportional to 487,200.90, 730,801.35 and 132,258.90 is: 198,388.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,200.90 : 730,801.35 = 132,258.90 : x
  2. Step 2: Convert to fraction form
    487,200.90/730,801.35 = 132,258.90/x
  3. Step 3: Cross multiply
    487,200.90x = 730,801.35 × 132,258.90
  4. Step 4: Simplify right side
    487,200.90x = 96,654,982,669.52
  5. Step 5: Solve for x
    x = 96,654,982,669.52/487,200.90
  6. Step 6: Final answer
    x = 198,388.35

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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.