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Finding the Fourth Proportional to 323,406.57, 485,177.06 and 136,419.69

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Solution

The fourth proportional to 323,406.57, 485,177.06 and 136,419.69 is: 204,657.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,406.57 : 485,177.06 = 136,419.69 : x
  2. Step 2: Convert to fraction form
    323,406.57/485,177.06 = 136,419.69/x
  3. Step 3: Cross multiply
    323,406.57x = 485,177.06 × 136,419.69
  4. Step 4: Simplify right side
    323,406.57x = 66,187,703,438.21
  5. Step 5: Solve for x
    x = 66,187,703,438.21/323,406.57
  6. Step 6: Final answer
    x = 204,657.88

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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.