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Finding the Fourth Proportional to 279,548.64, 418,972.92 and 220,149.72

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Solution

The fourth proportional to 279,548.64, 418,972.92 and 220,149.72 is: 329,948.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,548.64 : 418,972.92 = 220,149.72 : x
  2. Step 2: Convert to fraction form
    279,548.64/418,972.92 = 220,149.72/x
  3. Step 3: Cross multiply
    279,548.64x = 418,972.92 × 220,149.72
  4. Step 4: Simplify right side
    279,548.64x = 92,236,771,025.58
  5. Step 5: Solve for x
    x = 92,236,771,025.58/279,548.64
  6. Step 6: Final answer
    x = 329,948.92

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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.