Home / 218,593,931.80-328,016,868.90-82,377,074.20

Finding the Fourth Proportional to 218,593,931.80, 328,016,868.90 and 82,377,074.20

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Solution

The fourth proportional to 218,593,931.80, 328,016,868.90 and 82,377,074.20 is: 123,613,083.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,593,931.80 : 328,016,868.90 = 82,377,074.20 : x
  2. Step 2: Convert to fraction form
    218,593,931.80/328,016,868.90 = 82,377,074.20/x
  3. Step 3: Cross multiply
    218,593,931.80x = 328,016,868.90 × 82,377,074.20
  4. Step 4: Simplify right side
    218,593,931.80x = 27,021,069,948,226,972
  5. Step 5: Solve for x
    x = 27,021,069,948,226,972/218,593,931.80
  6. Step 6: Final answer
    x = 123,613,083.52

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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.