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Finding the Fourth Proportional to 261,384.60, 391,202.10 and 229,891.80

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Solution

The fourth proportional to 261,384.60, 391,202.10 and 229,891.80 is: 344,068.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,384.60 : 391,202.10 = 229,891.80 : x
  2. Step 2: Convert to fraction form
    261,384.60/391,202.10 = 229,891.80/x
  3. Step 3: Cross multiply
    261,384.60x = 391,202.10 × 229,891.80
  4. Step 4: Simplify right side
    261,384.60x = 89,934,154,932.78
  5. Step 5: Solve for x
    x = 89,934,154,932.78/261,384.60
  6. Step 6: Final answer
    x = 344,068.30

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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.