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Finding the Fourth Proportional to 345,080.40, 517,620.60 and 108,422.70

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Solution

The fourth proportional to 345,080.40, 517,620.60 and 108,422.70 is: 162,634.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,080.40 : 517,620.60 = 108,422.70 : x
  2. Step 2: Convert to fraction form
    345,080.40/517,620.60 = 108,422.70/x
  3. Step 3: Cross multiply
    345,080.40x = 517,620.60 × 108,422.70
  4. Step 4: Simplify right side
    345,080.40x = 56,121,823,027.62
  5. Step 5: Solve for x
    x = 56,121,823,027.62/345,080.40
  6. Step 6: Final answer
    x = 162,634.05

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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.