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Finding the Fourth Proportional to 667,590.88, 1,001,543.84 and 218,310.00

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Solution

The fourth proportional to 667,590.88, 1,001,543.84 and 218,310.00 is: 327,516.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,590.88 : 1,001,543.84 = 218,310.00 : x
  2. Step 2: Convert to fraction form
    667,590.88/1,001,543.84 = 218,310.00/x
  3. Step 3: Cross multiply
    667,590.88x = 1,001,543.84 × 218,310.00
  4. Step 4: Simplify right side
    667,590.88x = 218,647,037,315.41
  5. Step 5: Solve for x
    x = 218,647,037,315.41/667,590.88
  6. Step 6: Final answer
    x = 327,516.51

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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.