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Finding the Fourth Proportional to 279,701.90, 419,552.85 and 80,034.20

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Solution

The fourth proportional to 279,701.90, 419,552.85 and 80,034.20 is: 120,051.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,701.90 : 419,552.85 = 80,034.20 : x
  2. Step 2: Convert to fraction form
    279,701.90/419,552.85 = 80,034.20/x
  3. Step 3: Cross multiply
    279,701.90x = 419,552.85 × 80,034.20
  4. Step 4: Simplify right side
    279,701.90x = 33,578,576,707.47
  5. Step 5: Solve for x
    x = 33,578,576,707.47/279,701.90
  6. Step 6: Final answer
    x = 120,051.30

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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.