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Finding the Fourth Proportional to 279,926.44, 420,052.28 and 117,808.56

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Solution

The fourth proportional to 279,926.44, 420,052.28 and 117,808.56 is: 176,781.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,926.44 : 420,052.28 = 117,808.56 : x
  2. Step 2: Convert to fraction form
    279,926.44/420,052.28 = 117,808.56/x
  3. Step 3: Cross multiply
    279,926.44x = 420,052.28 × 117,808.56
  4. Step 4: Simplify right side
    279,926.44x = 49,485,754,231.52
  5. Step 5: Solve for x
    x = 49,485,754,231.52/279,926.44
  6. Step 6: Final answer
    x = 176,781.28

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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.