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Finding the Fourth Proportional to 218,800.80, 328,235.76 and 94,142.88

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Solution

The fourth proportional to 218,800.80, 328,235.76 and 94,142.88 is: 141,229.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,800.80 : 328,235.76 = 94,142.88 : x
  2. Step 2: Convert to fraction form
    218,800.80/328,235.76 = 94,142.88/x
  3. Step 3: Cross multiply
    218,800.80x = 328,235.76 × 94,142.88
  4. Step 4: Simplify right side
    218,800.80x = 30,901,059,765.39
  5. Step 5: Solve for x
    x = 30,901,059,765.39/218,800.80
  6. Step 6: Final answer
    x = 141,229.19

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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.