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Finding the Fourth Proportional to 362,487.80, 543,731.70 and 125,854.40

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Solution

The fourth proportional to 362,487.80, 543,731.70 and 125,854.40 is: 188,781.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,487.80 : 543,731.70 = 125,854.40 : x
  2. Step 2: Convert to fraction form
    362,487.80/543,731.70 = 125,854.40/x
  3. Step 3: Cross multiply
    362,487.80x = 543,731.70 × 125,854.40
  4. Step 4: Simplify right side
    362,487.80x = 68,431,026,864.48
  5. Step 5: Solve for x
    x = 68,431,026,864.48/362,487.80
  6. Step 6: Final answer
    x = 188,781.60

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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.