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Finding the Fourth Proportional to 667,585.80, 1,001,475.90 and 218,197.80

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Solution

The fourth proportional to 667,585.80, 1,001,475.90 and 218,197.80 is: 327,328.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,585.80 : 1,001,475.90 = 218,197.80 : x
  2. Step 2: Convert to fraction form
    667,585.80/1,001,475.90 = 218,197.80/x
  3. Step 3: Cross multiply
    667,585.80x = 1,001,475.90 × 218,197.80
  4. Step 4: Simplify right side
    667,585.80x = 218,519,838,133.02
  5. Step 5: Solve for x
    x = 218,519,838,133.02/667,585.80
  6. Step 6: Final answer
    x = 327,328.47

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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.