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Finding the Fourth Proportional to 312,575.65, 468,172.28 and 125,490.85

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Solution

The fourth proportional to 312,575.65, 468,172.28 and 125,490.85 is: 187,958.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,575.65 : 468,172.28 = 125,490.85 : x
  2. Step 2: Convert to fraction form
    312,575.65/468,172.28 = 125,490.85/x
  3. Step 3: Cross multiply
    312,575.65x = 468,172.28 × 125,490.85
  4. Step 4: Simplify right side
    312,575.65x = 58,751,336,736.18
  5. Step 5: Solve for x
    x = 58,751,336,736.18/312,575.65
  6. Step 6: Final answer
    x = 187,958.78

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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.