Home / 278,793,821.19-418,145,280.99-82,011,213.27

Finding the Fourth Proportional to 278,793,821.19, 418,145,280.99 and 82,011,213.27

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Solution

The fourth proportional to 278,793,821.19, 418,145,280.99 and 82,011,213.27 is: 123,003,449.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,793,821.19 : 418,145,280.99 = 82,011,213.27 : x
  2. Step 2: Convert to fraction form
    278,793,821.19/418,145,280.99 = 82,011,213.27/x
  3. Step 3: Cross multiply
    278,793,821.19x = 418,145,280.99 × 82,011,213.27
  4. Step 4: Simplify right side
    278,793,821.19x = 34,292,601,814,614,184
  5. Step 5: Solve for x
    x = 34,292,601,814,614,184/278,793,821.19
  6. Step 6: Final answer
    x = 123,003,449.89

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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.