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Finding the Fourth Proportional to 256,545.12, 384,837.18 and 88,064.11

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Solution

The fourth proportional to 256,545.12, 384,837.18 and 88,064.11 is: 132,102.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,545.12 : 384,837.18 = 88,064.11 : x
  2. Step 2: Convert to fraction form
    256,545.12/384,837.18 = 88,064.11/x
  3. Step 3: Cross multiply
    256,545.12x = 384,837.18 × 88,064.11
  4. Step 4: Simplify right side
    256,545.12x = 33,890,343,902.42
  5. Step 5: Solve for x
    x = 33,890,343,902.42/256,545.12
  6. Step 6: Final answer
    x = 132,102.86

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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.