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Finding the Fourth Proportional to 317,285.20, 475,812.60 and 159,461.20

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Solution

The fourth proportional to 317,285.20, 475,812.60 and 159,461.20 is: 239,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,285.20 : 475,812.60 = 159,461.20 : x
  2. Step 2: Convert to fraction form
    317,285.20/475,812.60 = 159,461.20/x
  3. Step 3: Cross multiply
    317,285.20x = 475,812.60 × 159,461.20
  4. Step 4: Simplify right side
    317,285.20x = 75,873,648,171.12
  5. Step 5: Solve for x
    x = 75,873,648,171.12/317,285.20
  6. Step 6: Final answer
    x = 239,133.90

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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.