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Finding the Fourth Proportional to 256,787.28, 385,229.16 and 116,555.76

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Solution

The fourth proportional to 256,787.28, 385,229.16 and 116,555.76 is: 174,855.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,787.28 : 385,229.16 = 116,555.76 : x
  2. Step 2: Convert to fraction form
    256,787.28/385,229.16 = 116,555.76/x
  3. Step 3: Cross multiply
    256,787.28x = 385,229.16 × 116,555.76
  4. Step 4: Simplify right side
    256,787.28x = 44,900,677,517.96
  5. Step 5: Solve for x
    x = 44,900,677,517.96/256,787.28
  6. Step 6: Final answer
    x = 174,855.54

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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.