Home / 218,905.30-328,617.15-217,350.10

Finding the Fourth Proportional to 218,905.30, 328,617.15 and 217,350.10

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Solution

The fourth proportional to 218,905.30, 328,617.15 and 217,350.10 is: 326,282.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,905.30 : 328,617.15 = 217,350.10 : x
  2. Step 2: Convert to fraction form
    218,905.30/328,617.15 = 217,350.10/x
  3. Step 3: Cross multiply
    218,905.30x = 328,617.15 × 217,350.10
  4. Step 4: Simplify right side
    218,905.30x = 71,424,970,414.22
  5. Step 5: Solve for x
    x = 71,424,970,414.22/218,905.30
  6. Step 6: Final answer
    x = 326,282.51

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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.