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Finding the Fourth Proportional to 256,614.62, 384,897.20 and 79,073.96

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Solution

The fourth proportional to 256,614.62, 384,897.20 and 79,073.96 is: 118,603.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,614.62 : 384,897.20 = 79,073.96 : x
  2. Step 2: Convert to fraction form
    256,614.62/384,897.20 = 79,073.96/x
  3. Step 3: Cross multiply
    256,614.62x = 384,897.20 × 79,073.96
  4. Step 4: Simplify right side
    256,614.62x = 30,435,346,363.79
  5. Step 5: Solve for x
    x = 30,435,346,363.79/256,614.62
  6. Step 6: Final answer
    x = 118,603.32

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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.