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Finding the Fourth Proportional to 261,787.35, 392,680.98 and 74,798.85

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Solution

The fourth proportional to 261,787.35, 392,680.98 and 74,798.85 is: 112,198.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,787.35 : 392,680.98 = 74,798.85 : x
  2. Step 2: Convert to fraction form
    261,787.35/392,680.98 = 74,798.85/x
  3. Step 3: Cross multiply
    261,787.35x = 392,680.98 × 74,798.85
  4. Step 4: Simplify right side
    261,787.35x = 29,372,085,720.87
  5. Step 5: Solve for x
    x = 29,372,085,720.87/261,787.35
  6. Step 6: Final answer
    x = 112,198.26

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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.