Home / 278,718,889.38-418,051,319.09-84,632,010.63

Finding the Fourth Proportional to 278,718,889.38, 418,051,319.09 and 84,632,010.63

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Solution

The fourth proportional to 278,718,889.38, 418,051,319.09 and 84,632,010.63 is: 126,939,812.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,718,889.38 : 418,051,319.09 = 84,632,010.63 : x
  2. Step 2: Convert to fraction form
    278,718,889.38/418,051,319.09 = 84,632,010.63/x
  3. Step 3: Cross multiply
    278,718,889.38x = 418,051,319.09 × 84,632,010.63
  4. Step 4: Simplify right side
    278,718,889.38x = 35,380,523,680,687,240
  5. Step 5: Solve for x
    x = 35,380,523,680,687,240/278,718,889.38
  6. Step 6: Final answer
    x = 126,939,812.94

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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.