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Finding the Fourth Proportional to 517,080.20, 775,644.60 and 162,105.80

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Solution

The fourth proportional to 517,080.20, 775,644.60 and 162,105.80 is: 243,166.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,080.20 : 775,644.60 = 162,105.80 : x
  2. Step 2: Convert to fraction form
    517,080.20/775,644.60 = 162,105.80/x
  3. Step 3: Cross multiply
    517,080.20x = 775,644.60 × 162,105.80
  4. Step 4: Simplify right side
    517,080.20x = 125,736,488,398.68
  5. Step 5: Solve for x
    x = 125,736,488,398.68/517,080.20
  6. Step 6: Final answer
    x = 243,166.32

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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.