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Finding the Fourth Proportional to 256,939.44, 385,417.57 and 88,457.97

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Solution

The fourth proportional to 256,939.44, 385,417.57 and 88,457.97 is: 132,689.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,939.44 : 385,417.57 = 88,457.97 : x
  2. Step 2: Convert to fraction form
    256,939.44/385,417.57 = 88,457.97/x
  3. Step 3: Cross multiply
    256,939.44x = 385,417.57 × 88,457.97
  4. Step 4: Simplify right side
    256,939.44x = 34,093,255,844.53
  5. Step 5: Solve for x
    x = 34,093,255,844.53/256,939.44
  6. Step 6: Final answer
    x = 132,689.85

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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.