Home / 218,728,900.80-328,093,351.20-215,327,678.40

Finding the Fourth Proportional to 218,728,900.80, 328,093,351.20 and 215,327,678.40

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Solution

The fourth proportional to 218,728,900.80, 328,093,351.20 and 215,327,678.40 is: 322,991,517.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,728,900.80 : 328,093,351.20 = 215,327,678.40 : x
  2. Step 2: Convert to fraction form
    218,728,900.80/328,093,351.20 = 215,327,678.40/x
  3. Step 3: Cross multiply
    218,728,900.80x = 328,093,351.20 × 215,327,678.40
  4. Step 4: Simplify right side
    218,728,900.80x = 70,647,579,612,371,856
  5. Step 5: Solve for x
    x = 70,647,579,612,371,856/218,728,900.80
  6. Step 6: Final answer
    x = 322,991,517.60

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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.