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Finding the Fourth Proportional to 261,251.61, 391,679.97 and 134,836.93

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Solution

The fourth proportional to 261,251.61, 391,679.97 and 134,836.93 is: 202,153.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,251.61 : 391,679.97 = 134,836.93 : x
  2. Step 2: Convert to fraction form
    261,251.61/391,679.97 = 134,836.93/x
  3. Step 3: Cross multiply
    261,251.61x = 391,679.97 × 134,836.93
  4. Step 4: Simplify right side
    261,251.61x = 52,812,924,697.29
  5. Step 5: Solve for x
    x = 52,812,924,697.29/261,251.61
  6. Step 6: Final answer
    x = 202,153.49

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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.