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Finding the Fourth Proportional to 256,976.15, 385,490.03 and 88,474.17

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Solution

The fourth proportional to 256,976.15, 385,490.03 and 88,474.17 is: 132,720.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,976.15 : 385,490.03 = 88,474.17 : x
  2. Step 2: Convert to fraction form
    256,976.15/385,490.03 = 88,474.17/x
  3. Step 3: Cross multiply
    256,976.15x = 385,490.03 × 88,474.17
  4. Step 4: Simplify right side
    256,976.15x = 34,105,910,005.15
  5. Step 5: Solve for x
    x = 34,105,910,005.15/256,976.15
  6. Step 6: Final answer
    x = 132,720.14

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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.