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Finding the Fourth Proportional to 279,659.32, 385,932.47 and 158,803.13

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Solution

The fourth proportional to 279,659.32, 385,932.47 and 158,803.13 is: 219,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,659.32 : 385,932.47 = 158,803.13 : x
  2. Step 2: Convert to fraction form
    279,659.32/385,932.47 = 158,803.13/x
  3. Step 3: Cross multiply
    279,659.32x = 385,932.47 × 158,803.13
  4. Step 4: Simplify right side
    279,659.32x = 61,287,284,375.45
  5. Step 5: Solve for x
    x = 61,287,284,375.45/279,659.32
  6. Step 6: Final answer
    x = 219,149.80

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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.