Home / 218,729,794.80-328,220,663.40-82,512,937.20

Finding the Fourth Proportional to 218,729,794.80, 328,220,663.40 and 82,512,937.20

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Solution

The fourth proportional to 218,729,794.80, 328,220,663.40 and 82,512,937.20 is: 123,816,926.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,729,794.80 : 328,220,663.40 = 82,512,937.20 : x
  2. Step 2: Convert to fraction form
    218,729,794.80/328,220,663.40 = 82,512,937.20/x
  3. Step 3: Cross multiply
    218,729,794.80x = 328,220,663.40 × 82,512,937.20
  4. Step 4: Simplify right side
    218,729,794.80x = 27,082,450,986,866,536
  5. Step 5: Solve for x
    x = 27,082,450,986,866,536/218,729,794.80
  6. Step 6: Final answer
    x = 123,816,926.78

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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.