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Finding the Fourth Proportional to 391,175.46, 586,763.28 and 251,819.82

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Solution

The fourth proportional to 391,175.46, 586,763.28 and 251,819.82 is: 377,729.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,175.46 : 586,763.28 = 251,819.82 : x
  2. Step 2: Convert to fraction form
    391,175.46/586,763.28 = 251,819.82/x
  3. Step 3: Cross multiply
    391,175.46x = 586,763.28 × 251,819.82
  4. Step 4: Simplify right side
    391,175.46x = 147,758,623,552.21
  5. Step 5: Solve for x
    x = 147,758,623,552.21/391,175.46
  6. Step 6: Final answer
    x = 377,729.79

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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.