Home / 279,936,034.30-419,904,051.45-85,845,907.90

Finding the Fourth Proportional to 279,936,034.30, 419,904,051.45 and 85,845,907.90

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Solution

The fourth proportional to 279,936,034.30, 419,904,051.45 and 85,845,907.90 is: 128,768,861.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,034.30 : 419,904,051.45 = 85,845,907.90 : x
  2. Step 2: Convert to fraction form
    279,936,034.30/419,904,051.45 = 85,845,907.90/x
  3. Step 3: Cross multiply
    279,936,034.30x = 419,904,051.45 × 85,845,907.90
  4. Step 4: Simplify right side
    279,936,034.30x = 36,047,044,527,613,560
  5. Step 5: Solve for x
    x = 36,047,044,527,613,560/279,936,034.30
  6. Step 6: Final answer
    x = 128,768,861.85

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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.