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Finding the Fourth Proportional to 487,258.40, 730,887.60 and 132,327.20

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Solution

The fourth proportional to 487,258.40, 730,887.60 and 132,327.20 is: 198,490.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,258.40 : 730,887.60 = 132,327.20 : x
  2. Step 2: Convert to fraction form
    487,258.40/730,887.60 = 132,327.20/x
  3. Step 3: Cross multiply
    487,258.40x = 730,887.60 × 132,327.20
  4. Step 4: Simplify right side
    487,258.40x = 96,716,309,622.72
  5. Step 5: Solve for x
    x = 96,716,309,622.72/487,258.40
  6. Step 6: Final answer
    x = 198,490.80

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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.