Home / 218,593,921.80-328,016,853.90-82,377,064.20

Finding the Fourth Proportional to 218,593,921.80, 328,016,853.90 and 82,377,064.20

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Solution

The fourth proportional to 218,593,921.80, 328,016,853.90 and 82,377,064.20 is: 123,613,068.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,593,921.80 : 328,016,853.90 = 82,377,064.20 : x
  2. Step 2: Convert to fraction form
    218,593,921.80/328,016,853.90 = 82,377,064.20/x
  3. Step 3: Cross multiply
    218,593,921.80x = 328,016,853.90 × 82,377,064.20
  4. Step 4: Simplify right side
    218,593,921.80x = 27,021,065,432,402,320
  5. Step 5: Solve for x
    x = 27,021,065,432,402,320/218,593,921.80
  6. Step 6: Final answer
    x = 123,613,068.51

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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.