Home / 218,916.11-328,374.17-100,686.89

Finding the Fourth Proportional to 218,916.11, 328,374.17 and 100,686.89

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Solution

The fourth proportional to 218,916.11, 328,374.17 and 100,686.89 is: 151,030.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,916.11 : 328,374.17 = 100,686.89 : x
  2. Step 2: Convert to fraction form
    218,916.11/328,374.17 = 100,686.89/x
  3. Step 3: Cross multiply
    218,916.11x = 328,374.17 × 100,686.89
  4. Step 4: Simplify right side
    218,916.11x = 33,062,973,019.73
  5. Step 5: Solve for x
    x = 33,062,973,019.73/218,916.11
  6. Step 6: Final answer
    x = 151,030.33

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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.