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Finding the Fourth Proportional to 256,938.44, 385,416.07 and 88,456.97

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Solution

The fourth proportional to 256,938.44, 385,416.07 and 88,456.97 is: 132,688.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,938.44 : 385,416.07 = 88,456.97 : x
  2. Step 2: Convert to fraction form
    256,938.44/385,416.07 = 88,456.97/x
  3. Step 3: Cross multiply
    256,938.44x = 385,416.07 × 88,456.97
  4. Step 4: Simplify right side
    256,938.44x = 34,092,738,483.91
  5. Step 5: Solve for x
    x = 34,092,738,483.91/256,938.44
  6. Step 6: Final answer
    x = 132,688.36

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1.5x scale

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.