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Finding the Fourth Proportional to 240,318.60, 360,045.90 and 115,384.20

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Solution

The fourth proportional to 240,318.60, 360,045.90 and 115,384.20 is: 172,868.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,318.60 : 360,045.90 = 115,384.20 : x
  2. Step 2: Convert to fraction form
    240,318.60/360,045.90 = 115,384.20/x
  3. Step 3: Cross multiply
    240,318.60x = 360,045.90 × 115,384.20
  4. Step 4: Simplify right side
    240,318.60x = 41,543,608,134.78
  5. Step 5: Solve for x
    x = 41,543,608,134.78/240,318.60
  6. Step 6: Final answer
    x = 172,868.88

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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.