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Finding the Fourth Proportional to 387,248.62, 581,100.48 and 162,591.78

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Solution

The fourth proportional to 387,248.62, 581,100.48 and 162,591.78 is: 243,983.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,248.62 : 581,100.48 = 162,591.78 : x
  2. Step 2: Convert to fraction form
    387,248.62/581,100.48 = 162,591.78/x
  3. Step 3: Cross multiply
    387,248.62x = 581,100.48 × 162,591.78
  4. Step 4: Simplify right side
    387,248.62x = 94,482,161,402.05
  5. Step 5: Solve for x
    x = 94,482,161,402.05/387,248.62
  6. Step 6: Final answer
    x = 243,983.21

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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.