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Finding the Fourth Proportional to 399,045.64, 550,694.69 and 217,769.27

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Solution

The fourth proportional to 399,045.64, 550,694.69 and 217,769.27 is: 300,527.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,045.64 : 550,694.69 = 217,769.27 : x
  2. Step 2: Convert to fraction form
    399,045.64/550,694.69 = 217,769.27/x
  3. Step 3: Cross multiply
    399,045.64x = 550,694.69 × 217,769.27
  4. Step 4: Simplify right side
    399,045.64x = 119,924,380,922.07
  5. Step 5: Solve for x
    x = 119,924,380,922.07/399,045.64
  6. Step 6: Final answer
    x = 300,527.98

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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.