Home / 667,374.04-1,001,138.82-218,128.60

Finding the Fourth Proportional to 667,374.04, 1,001,138.82 and 218,128.60

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Solution

The fourth proportional to 667,374.04, 1,001,138.82 and 218,128.60 is: 327,218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,374.04 : 1,001,138.82 = 218,128.60 : x
  2. Step 2: Convert to fraction form
    667,374.04/1,001,138.82 = 218,128.60/x
  3. Step 3: Cross multiply
    667,374.04x = 1,001,138.82 × 218,128.60
  4. Step 4: Simplify right side
    667,374.04x = 218,377,009,212.25
  5. Step 5: Solve for x
    x = 218,377,009,212.25/667,374.04
  6. Step 6: Final answer
    x = 327,218.32

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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.