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Finding the Fourth Proportional to 312,454.35, 468,400.86 and 112,727.79

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Solution

The fourth proportional to 312,454.35, 468,400.86 and 112,727.79 is: 168,990.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,454.35 : 468,400.86 = 112,727.79 : x
  2. Step 2: Convert to fraction form
    312,454.35/468,400.86 = 112,727.79/x
  3. Step 3: Cross multiply
    312,454.35x = 468,400.86 × 112,727.79
  4. Step 4: Simplify right side
    312,454.35x = 52,801,793,781.90
  5. Step 5: Solve for x
    x = 52,801,793,781.90/312,454.35
  6. Step 6: Final answer
    x = 168,990.43

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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.