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Finding the Fourth Proportional to 256,641.92, 384,866.88 and 88,114.40

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Solution

The fourth proportional to 256,641.92, 384,866.88 and 88,114.40 is: 132,138.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,641.92 : 384,866.88 = 88,114.40 : x
  2. Step 2: Convert to fraction form
    256,641.92/384,866.88 = 88,114.40/x
  3. Step 3: Cross multiply
    256,641.92x = 384,866.88 × 88,114.40
  4. Step 4: Simplify right side
    256,641.92x = 33,912,314,211.07
  5. Step 5: Solve for x
    x = 33,912,314,211.07/256,641.92
  6. Step 6: Final answer
    x = 132,138.64

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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.