Home / 218,901.18-328,370.40-69,101.40

Finding the Fourth Proportional to 218,901.18, 328,370.40 and 69,101.40

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Solution

The fourth proportional to 218,901.18, 328,370.40 and 69,101.40 is: 103,657.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,901.18 : 328,370.40 = 69,101.40 : x
  2. Step 2: Convert to fraction form
    218,901.18/328,370.40 = 69,101.40/x
  3. Step 3: Cross multiply
    218,901.18x = 328,370.40 × 69,101.40
  4. Step 4: Simplify right side
    218,901.18x = 22,690,854,358.56
  5. Step 5: Solve for x
    x = 22,690,854,358.56/218,901.18
  6. Step 6: Final answer
    x = 103,657.98

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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.