Home / 218,920.31-328,278.40-113,711.03

Finding the Fourth Proportional to 218,920.31, 328,278.40 and 113,711.03

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Solution

The fourth proportional to 218,920.31, 328,278.40 and 113,711.03 is: 170,513.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,920.31 : 328,278.40 = 113,711.03 : x
  2. Step 2: Convert to fraction form
    218,920.31/328,278.40 = 113,711.03/x
  3. Step 3: Cross multiply
    218,920.31x = 328,278.40 × 113,711.03
  4. Step 4: Simplify right side
    218,920.31x = 37,328,874,990.75
  5. Step 5: Solve for x
    x = 37,328,874,990.75/218,920.31
  6. Step 6: Final answer
    x = 170,513.53

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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.