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Finding the Fourth Proportional to 312,289.43, 468,147.11 and 112,560.93

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Solution

The fourth proportional to 312,289.43, 468,147.11 and 112,560.93 is: 168,737.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,289.43 : 468,147.11 = 112,560.93 : x
  2. Step 2: Convert to fraction form
    312,289.43/468,147.11 = 112,560.93/x
  3. Step 3: Cross multiply
    312,289.43x = 468,147.11 × 112,560.93
  4. Step 4: Simplify right side
    312,289.43x = 52,695,073,515.61
  5. Step 5: Solve for x
    x = 52,695,073,515.61/312,289.43
  6. Step 6: Final answer
    x = 168,737.94

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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.