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Finding the Fourth Proportional to 261,392.67, 392,080.80 and 74,404.17

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Solution

The fourth proportional to 261,392.67, 392,080.80 and 74,404.17 is: 111,603.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,392.67 : 392,080.80 = 74,404.17 : x
  2. Step 2: Convert to fraction form
    261,392.67/392,080.80 = 74,404.17/x
  3. Step 3: Cross multiply
    261,392.67x = 392,080.80 × 74,404.17
  4. Step 4: Simplify right side
    261,392.67x = 29,172,446,775.95
  5. Step 5: Solve for x
    x = 29,172,446,775.95/261,392.67
  6. Step 6: Final answer
    x = 111,603.92

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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.