Home / 218,644,863.30-328,093,266.15-82,428,005.70

Finding the Fourth Proportional to 218,644,863.30, 328,093,266.15 and 82,428,005.70

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Solution

The fourth proportional to 218,644,863.30, 328,093,266.15 and 82,428,005.70 is: 123,689,499.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,644,863.30 : 328,093,266.15 = 82,428,005.70 : x
  2. Step 2: Convert to fraction form
    218,644,863.30/328,093,266.15 = 82,428,005.70/x
  3. Step 3: Cross multiply
    218,644,863.30x = 328,093,266.15 × 82,428,005.70
  4. Step 4: Simplify right side
    218,644,863.30x = 27,044,073,612,343,816
  5. Step 5: Solve for x
    x = 27,044,073,612,343,816/218,644,863.30
  6. Step 6: Final answer
    x = 123,689,499.05

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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.