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Finding the Fourth Proportional to 279,634.68, 385,909.52 and 158,773.77

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Solution

The fourth proportional to 279,634.68, 385,909.52 and 158,773.77 is: 219,115.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,634.68 : 385,909.52 = 158,773.77 : x
  2. Step 2: Convert to fraction form
    279,634.68/385,909.52 = 158,773.77/x
  3. Step 3: Cross multiply
    279,634.68x = 385,909.52 × 158,773.77
  4. Step 4: Simplify right side
    279,634.68x = 61,272,308,575.42
  5. Step 5: Solve for x
    x = 61,272,308,575.42/279,634.68
  6. Step 6: Final answer
    x = 219,115.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.