Home / 218,885.40-328,145.85-92,622.60

Finding the Fourth Proportional to 218,885.40, 328,145.85 and 92,622.60

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Solution

The fourth proportional to 218,885.40, 328,145.85 and 92,622.60 is: 138,856.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,885.40 : 328,145.85 = 92,622.60 : x
  2. Step 2: Convert to fraction form
    218,885.40/328,145.85 = 92,622.60/x
  3. Step 3: Cross multiply
    218,885.40x = 328,145.85 × 92,622.60
  4. Step 4: Simplify right side
    218,885.40x = 30,393,721,806.21
  5. Step 5: Solve for x
    x = 30,393,721,806.21/218,885.40
  6. Step 6: Final answer
    x = 138,856.78

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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.