Home / 667,516.80-1,001,372.40-218,128.80

Finding the Fourth Proportional to 667,516.80, 1,001,372.40 and 218,128.80

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Solution

The fourth proportional to 667,516.80, 1,001,372.40 and 218,128.80 is: 327,224.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,516.80 : 1,001,372.40 = 218,128.80 : x
  2. Step 2: Convert to fraction form
    667,516.80/1,001,372.40 = 218,128.80/x
  3. Step 3: Cross multiply
    667,516.80x = 1,001,372.40 × 218,128.80
  4. Step 4: Simplify right side
    667,516.80x = 218,428,159,965.12
  5. Step 5: Solve for x
    x = 218,428,159,965.12/667,516.80
  6. Step 6: Final answer
    x = 327,224.96

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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.