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Finding the Fourth Proportional to 279,425.10, 419,152.83 and 79,730.13

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Solution

The fourth proportional to 279,425.10, 419,152.83 and 79,730.13 is: 119,599.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,425.10 : 419,152.83 = 79,730.13 : x
  2. Step 2: Convert to fraction form
    279,425.10/419,152.83 = 79,730.13/x
  3. Step 3: Cross multiply
    279,425.10x = 419,152.83 × 79,730.13
  4. Step 4: Simplify right side
    279,425.10x = 33,419,109,625.77
  5. Step 5: Solve for x
    x = 33,419,109,625.77/279,425.10
  6. Step 6: Final answer
    x = 119,599.53

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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.