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Finding the Fourth Proportional to 317,333.30, 476,001.09 and 80,676

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Solution

The fourth proportional to 317,333.30, 476,001.09 and 80,676 is: 121,014.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,333.30 : 476,001.09 = 80,676 : x
  2. Step 2: Convert to fraction form
    317,333.30/476,001.09 = 80,676/x
  3. Step 3: Cross multiply
    317,333.30x = 476,001.09 × 80,676
  4. Step 4: Simplify right side
    317,333.30x = 38,401,863,936.84
  5. Step 5: Solve for x
    x = 38,401,863,936.84/317,333.30
  6. Step 6: Final answer
    x = 121,014.29

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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.