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Finding the Fourth Proportional to 667,395.64, 1,001,085 and 161,960.76

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Solution

The fourth proportional to 667,395.64, 1,001,085 and 161,960.76 is: 242,939.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,395.64 : 1,001,085 = 161,960.76 : x
  2. Step 2: Convert to fraction form
    667,395.64/1,001,085 = 161,960.76/x
  3. Step 3: Cross multiply
    667,395.64x = 1,001,085 × 161,960.76
  4. Step 4: Simplify right side
    667,395.64x = 162,136,487,424.60
  5. Step 5: Solve for x
    x = 162,136,487,424.60/667,395.64
  6. Step 6: Final answer
    x = 242,939.09

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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.