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Finding the Fourth Proportional to 220,042.64, 329,861.88 and 79,767.44

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Solution

The fourth proportional to 220,042.64, 329,861.88 and 79,767.44 is: 119,577.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,042.64 : 329,861.88 = 79,767.44 : x
  2. Step 2: Convert to fraction form
    220,042.64/329,861.88 = 79,767.44/x
  3. Step 3: Cross multiply
    220,042.64x = 329,861.88 × 79,767.44
  4. Step 4: Simplify right side
    220,042.64x = 26,312,237,721.19
  5. Step 5: Solve for x
    x = 26,312,237,721.19/220,042.64
  6. Step 6: Final answer
    x = 119,577.90

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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.