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Finding the Fourth Proportional to 218,508.38, 301,549.98 and 126,630.82

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Solution

The fourth proportional to 218,508.38, 301,549.98 and 126,630.82 is: 174,755.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,508.38 : 301,549.98 = 126,630.82 : x
  2. Step 2: Convert to fraction form
    218,508.38/301,549.98 = 126,630.82/x
  3. Step 3: Cross multiply
    218,508.38x = 301,549.98 × 126,630.82
  4. Step 4: Simplify right side
    218,508.38x = 38,185,519,097.48
  5. Step 5: Solve for x
    x = 38,185,519,097.48/218,508.38
  6. Step 6: Final answer
    x = 174,755.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.