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Finding the Fourth Proportional to 312,576.76, 468,952.62 and 125,719.48

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Solution

The fourth proportional to 312,576.76, 468,952.62 and 125,719.48 is: 188,614.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,576.76 : 468,952.62 = 125,719.48 : x
  2. Step 2: Convert to fraction form
    312,576.76/468,952.62 = 125,719.48/x
  3. Step 3: Cross multiply
    312,576.76x = 468,952.62 × 125,719.48
  4. Step 4: Simplify right side
    312,576.76x = 58,956,479,531.04
  5. Step 5: Solve for x
    x = 58,956,479,531.04/312,576.76
  6. Step 6: Final answer
    x = 188,614.40

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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.