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Finding the Fourth Proportional to 312,400.39, 468,503.70 and 112,694.84

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Solution

The fourth proportional to 312,400.39, 468,503.70 and 112,694.84 is: 169,007.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,400.39 : 468,503.70 = 112,694.84 : x
  2. Step 2: Convert to fraction form
    312,400.39/468,503.70 = 112,694.84/x
  3. Step 3: Cross multiply
    312,400.39x = 468,503.70 × 112,694.84
  4. Step 4: Simplify right side
    312,400.39x = 52,797,947,168.39
  5. Step 5: Solve for x
    x = 52,797,947,168.39/312,400.39
  6. Step 6: Final answer
    x = 169,007.31

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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.