Home / 278,718,881.10-418,051,306.71-84,632,002.38

Finding the Fourth Proportional to 278,718,881.10, 418,051,306.71 and 84,632,002.38

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Solution

The fourth proportional to 278,718,881.10, 418,051,306.71 and 84,632,002.38 is: 126,939,800.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,718,881.10 : 418,051,306.71 = 84,632,002.38 : x
  2. Step 2: Convert to fraction form
    278,718,881.10/418,051,306.71 = 84,632,002.38/x
  3. Step 3: Cross multiply
    278,718,881.10x = 418,051,306.71 × 84,632,002.38
  4. Step 4: Simplify right side
    278,718,881.10x = 35,380,519,184,442,828
  5. Step 5: Solve for x
    x = 35,380,519,184,442,828/278,718,881.10
  6. Step 6: Final answer
    x = 126,939,800.58

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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.