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Finding the Fourth Proportional to 667,590.80, 1,001,483.40 and 218,202.80

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Solution

The fourth proportional to 667,590.80, 1,001,483.40 and 218,202.80 is: 327,335.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,590.80 : 1,001,483.40 = 218,202.80 : x
  2. Step 2: Convert to fraction form
    667,590.80/1,001,483.40 = 218,202.80/x
  3. Step 3: Cross multiply
    667,590.80x = 1,001,483.40 × 218,202.80
  4. Step 4: Simplify right side
    667,590.80x = 218,526,482,033.52
  5. Step 5: Solve for x
    x = 218,526,482,033.52/667,590.80
  6. Step 6: Final answer
    x = 327,335.97

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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.