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Finding the Fourth Proportional to 667,239.76, 1,000,855.96 and 161,800.36

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Solution

The fourth proportional to 667,239.76, 1,000,855.96 and 161,800.36 is: 242,699.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,239.76 : 1,000,855.96 = 161,800.36 : x
  2. Step 2: Convert to fraction form
    667,239.76/1,000,855.96 = 161,800.36/x
  3. Step 3: Cross multiply
    667,239.76x = 1,000,855.96 × 161,800.36
  4. Step 4: Simplify right side
    667,239.76x = 161,938,854,636.15
  5. Step 5: Solve for x
    x = 161,938,854,636.15/667,239.76
  6. Step 6: Final answer
    x = 242,699.65

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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.