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Finding the Fourth Proportional to 667,435.74, 1,001,143 and 162,000.90

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Solution

The fourth proportional to 667,435.74, 1,001,143 and 162,000.90 is: 242,998.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,435.74 : 1,001,143 = 162,000.90 : x
  2. Step 2: Convert to fraction form
    667,435.74/1,001,143 = 162,000.90/x
  3. Step 3: Cross multiply
    667,435.74x = 1,001,143 × 162,000.90
  4. Step 4: Simplify right side
    667,435.74x = 162,186,067,028.70
  5. Step 5: Solve for x
    x = 162,186,067,028.70/667,435.74
  6. Step 6: Final answer
    x = 242,998.77

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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.