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Finding the Fourth Proportional to 279,397.68, 419,167.25 and 79,718.77

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Solution

The fourth proportional to 279,397.68, 419,167.25 and 79,718.77 is: 119,598.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,397.68 : 419,167.25 = 79,718.77 : x
  2. Step 2: Convert to fraction form
    279,397.68/419,167.25 = 79,718.77/x
  3. Step 3: Cross multiply
    279,397.68x = 419,167.25 × 79,718.77
  4. Step 4: Simplify right side
    279,397.68x = 33,415,497,877.56
  5. Step 5: Solve for x
    x = 33,415,497,877.56/279,397.68
  6. Step 6: Final answer
    x = 119,598.34

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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.