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Finding the Fourth Proportional to 498,411.20, 747,789.60 and 218,129.60

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Solution

The fourth proportional to 498,411.20, 747,789.60 and 218,129.60 is: 327,270.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,411.20 : 747,789.60 = 218,129.60 : x
  2. Step 2: Convert to fraction form
    498,411.20/747,789.60 = 218,129.60/x
  3. Step 3: Cross multiply
    498,411.20x = 747,789.60 × 218,129.60
  4. Step 4: Simplify right side
    498,411.20x = 163,115,046,332.16
  5. Step 5: Solve for x
    x = 163,115,046,332.16/498,411.20
  6. Step 6: Final answer
    x = 327,270.03

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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.