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Finding the Fourth Proportional to 309,810.78, 464,764.77 and 132,318.78

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Solution

The fourth proportional to 309,810.78, 464,764.77 and 132,318.78 is: 198,498.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,810.78 : 464,764.77 = 132,318.78 : x
  2. Step 2: Convert to fraction form
    309,810.78/464,764.77 = 132,318.78/x
  3. Step 3: Cross multiply
    309,810.78x = 464,764.77 × 132,318.78
  4. Step 4: Simplify right side
    309,810.78x = 61,497,107,353.38
  5. Step 5: Solve for x
    x = 61,497,107,353.38/309,810.78
  6. Step 6: Final answer
    x = 198,498.93

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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.