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Finding the Fourth Proportional to 316,899.33, 475,350.08 and 80,241.90

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Solution

The fourth proportional to 316,899.33, 475,350.08 and 80,241.90 is: 120,363.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,899.33 : 475,350.08 = 80,241.90 : x
  2. Step 2: Convert to fraction form
    316,899.33/475,350.08 = 80,241.90/x
  3. Step 3: Cross multiply
    316,899.33x = 475,350.08 × 80,241.90
  4. Step 4: Simplify right side
    316,899.33x = 38,142,993,183.14
  5. Step 5: Solve for x
    x = 38,142,993,183.14/316,899.33
  6. Step 6: Final answer
    x = 120,363.12

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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.