Home / 278,820,297,849.38-418,315,801,056.42-142,778,744,827.86

Finding the Fourth Proportional to 278,820,297,849.38, 418,315,801,056.42 and 142,778,744,827.86

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Solution

The fourth proportional to 278,820,297,849.38, 418,315,801,056.42 and 142,778,744,827.86 is: 214,211,825,599.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,820,297,849.38 : 418,315,801,056.42 = 142,778,744,827.86 : x
  2. Step 2: Convert to fraction form
    278,820,297,849.38/418,315,801,056.42 = 142,778,744,827.86/x
  3. Step 3: Cross multiply
    278,820,297,849.38x = 418,315,801,056.42 × 142,778,744,827.86
  4. Step 4: Simplify right side
    278,820,297,849.38x = 59,726,605,016,496,431,169,536
  5. Step 5: Solve for x
    x = 59,726,605,016,496,431,169,536/278,820,297,849.38
  6. Step 6: Final answer
    x = 214,211,825,599.44

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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.