Home / 218,821.20-328,231.88-69,073.16

Finding the Fourth Proportional to 218,821.20, 328,231.88 and 69,073.16

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Solution

The fourth proportional to 218,821.20, 328,231.88 and 69,073.16 is: 103,609.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,821.20 : 328,231.88 = 69,073.16 : x
  2. Step 2: Convert to fraction form
    218,821.20/328,231.88 = 69,073.16/x
  3. Step 3: Cross multiply
    218,821.20x = 328,231.88 × 69,073.16
  4. Step 4: Simplify right side
    218,821.20x = 22,672,013,164.34
  5. Step 5: Solve for x
    x = 22,672,013,164.34/218,821.20
  6. Step 6: Final answer
    x = 103,609.77

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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.