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Finding the Fourth Proportional to 667,391.88, 1,001,079.36 and 161,957

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Solution

The fourth proportional to 667,391.88, 1,001,079.36 and 161,957 is: 242,933.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,391.88 : 1,001,079.36 = 161,957 : x
  2. Step 2: Convert to fraction form
    667,391.88/1,001,079.36 = 161,957/x
  3. Step 3: Cross multiply
    667,391.88x = 1,001,079.36 × 161,957
  4. Step 4: Simplify right side
    667,391.88x = 162,131,809,907.52
  5. Step 5: Solve for x
    x = 162,131,809,907.52/667,391.88
  6. Step 6: Final answer
    x = 242,933.45

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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.