Home / 278,793,819.69-418,145,278.74-82,011,211.76

Finding the Fourth Proportional to 278,793,819.69, 418,145,278.74 and 82,011,211.76

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Solution

The fourth proportional to 278,793,819.69, 418,145,278.74 and 82,011,211.76 is: 123,003,447.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,793,819.69 : 418,145,278.74 = 82,011,211.76 : x
  2. Step 2: Convert to fraction form
    278,793,819.69/418,145,278.74 = 82,011,211.76/x
  3. Step 3: Cross multiply
    278,793,819.69x = 418,145,278.74 × 82,011,211.76
  4. Step 4: Simplify right side
    278,793,819.69x = 34,292,601,002,157,556
  5. Step 5: Solve for x
    x = 34,292,601,002,157,556/278,793,819.69
  6. Step 6: Final answer
    x = 123,003,447.64

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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.