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Finding the Fourth Proportional to 261,511.76, 391,930.41 and 126,544.10

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Solution

The fourth proportional to 261,511.76, 391,930.41 and 126,544.10 is: 189,652.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,511.76 : 391,930.41 = 126,544.10 : x
  2. Step 2: Convert to fraction form
    261,511.76/391,930.41 = 126,544.10/x
  3. Step 3: Cross multiply
    261,511.76x = 391,930.41 × 126,544.10
  4. Step 4: Simplify right side
    261,511.76x = 49,596,480,996.08
  5. Step 5: Solve for x
    x = 49,596,480,996.08/261,511.76
  6. Step 6: Final answer
    x = 189,652.97

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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.