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Finding the Fourth Proportional to 261,463.35, 392,149.86 and 69,339.12

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Solution

The fourth proportional to 261,463.35, 392,149.86 and 69,339.12 is: 103,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,463.35 : 392,149.86 = 69,339.12 : x
  2. Step 2: Convert to fraction form
    261,463.35/392,149.86 = 69,339.12/x
  3. Step 3: Cross multiply
    261,463.35x = 392,149.86 × 69,339.12
  4. Step 4: Simplify right side
    261,463.35x = 27,191,326,200.52
  5. Step 5: Solve for x
    x = 27,191,326,200.52/261,463.35
  6. Step 6: Final answer
    x = 103,996.70

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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.