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Finding the Fourth Proportional to 576,961.76, 865,445.88 and 156,241.28

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Solution

The fourth proportional to 576,961.76, 865,445.88 and 156,241.28 is: 234,362.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,961.76 : 865,445.88 = 156,241.28 : x
  2. Step 2: Convert to fraction form
    576,961.76/865,445.88 = 156,241.28/x
  3. Step 3: Cross multiply
    576,961.76x = 865,445.88 × 156,241.28
  4. Step 4: Simplify right side
    576,961.76x = 135,218,372,061.93
  5. Step 5: Solve for x
    x = 135,218,372,061.93/576,961.76
  6. Step 6: Final answer
    x = 234,362.80

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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.