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Finding the Fourth Proportional to 252,805.39, 379,209.49 and 84,325.25

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Solution

The fourth proportional to 252,805.39, 379,209.49 and 84,325.25 is: 126,488.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,805.39 : 379,209.49 = 84,325.25 : x
  2. Step 2: Convert to fraction form
    252,805.39/379,209.49 = 84,325.25/x
  3. Step 3: Cross multiply
    252,805.39x = 379,209.49 × 84,325.25
  4. Step 4: Simplify right side
    252,805.39x = 31,976,933,150.58
  5. Step 5: Solve for x
    x = 31,976,933,150.58/252,805.39
  6. Step 6: Final answer
    x = 126,488.34

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1.5x scale

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.