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Finding the Fourth Proportional to 312,429.38, 468,665.93 and 125,440.88

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Solution

The fourth proportional to 312,429.38, 468,665.93 and 125,440.88 is: 188,170.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,429.38 : 468,665.93 = 125,440.88 : x
  2. Step 2: Convert to fraction form
    312,429.38/468,665.93 = 125,440.88/x
  3. Step 3: Cross multiply
    312,429.38x = 468,665.93 × 125,440.88
  4. Step 4: Simplify right side
    312,429.38x = 58,789,864,655.49
  5. Step 5: Solve for x
    x = 58,789,864,655.49/312,429.38
  6. Step 6: Final answer
    x = 188,170.09

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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.