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Finding the Fourth Proportional to 667,395.84, 1,001,085.41 and 161,961

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Solution

The fourth proportional to 667,395.84, 1,001,085.41 and 161,961 is: 242,939.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,395.84 : 1,001,085.41 = 161,961 : x
  2. Step 2: Convert to fraction form
    667,395.84/1,001,085.41 = 161,961/x
  3. Step 3: Cross multiply
    667,395.84x = 1,001,085.41 × 161,961
  4. Step 4: Simplify right side
    667,395.84x = 162,136,793,279.21
  5. Step 5: Solve for x
    x = 162,136,793,279.21/667,395.84
  6. Step 6: Final answer
    x = 242,939.47

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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.