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Finding the Fourth Proportional to 317,469.78, 476,207.34 and 80,812.50

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Solution

The fourth proportional to 317,469.78, 476,207.34 and 80,812.50 is: 121,219.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,469.78 : 476,207.34 = 80,812.50 : x
  2. Step 2: Convert to fraction form
    317,469.78/476,207.34 = 80,812.50/x
  3. Step 3: Cross multiply
    317,469.78x = 476,207.34 × 80,812.50
  4. Step 4: Simplify right side
    317,469.78x = 38,483,505,663.75
  5. Step 5: Solve for x
    x = 38,483,505,663.75/317,469.78
  6. Step 6: Final answer
    x = 121,219.43

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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.