Home / 218,645,116.80-328,093,646.40-82,428,259.20

Finding the Fourth Proportional to 218,645,116.80, 328,093,646.40 and 82,428,259.20

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Solution

The fourth proportional to 218,645,116.80, 328,093,646.40 and 82,428,259.20 is: 123,689,879.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,645,116.80 : 328,093,646.40 = 82,428,259.20 : x
  2. Step 2: Convert to fraction form
    218,645,116.80/328,093,646.40 = 82,428,259.20/x
  3. Step 3: Cross multiply
    218,645,116.80x = 328,093,646.40 × 82,428,259.20
  4. Step 4: Simplify right side
    218,645,116.80x = 27,044,188,127,332,344
  5. Step 5: Solve for x
    x = 27,044,188,127,332,344/218,645,116.80
  6. Step 6: Final answer
    x = 123,689,879.40

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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.