Home / 278,718,876.59-418,051,299.96-84,631,997.88

Finding the Fourth Proportional to 278,718,876.59, 418,051,299.96 and 84,631,997.88

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Solution

The fourth proportional to 278,718,876.59, 418,051,299.96 and 84,631,997.88 is: 126,939,793.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,718,876.59 : 418,051,299.96 = 84,631,997.88 : x
  2. Step 2: Convert to fraction form
    278,718,876.59/418,051,299.96 = 84,631,997.88/x
  3. Step 3: Cross multiply
    278,718,876.59x = 418,051,299.96 × 84,631,997.88
  4. Step 4: Simplify right side
    278,718,876.59x = 35,380,516,731,945,960
  5. Step 5: Solve for x
    x = 35,380,516,731,945,960/278,718,876.59
  6. Step 6: Final answer
    x = 126,939,793.84

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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.