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Finding the Fourth Proportional to 345,435.48, 518,171.76 and 108,796.68

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Solution

The fourth proportional to 345,435.48, 518,171.76 and 108,796.68 is: 163,200.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,435.48 : 518,171.76 = 108,796.68 : x
  2. Step 2: Convert to fraction form
    345,435.48/518,171.76 = 108,796.68/x
  3. Step 3: Cross multiply
    345,435.48x = 518,171.76 × 108,796.68
  4. Step 4: Simplify right side
    345,435.48x = 56,375,367,157.76
  5. Step 5: Solve for x
    x = 56,375,367,157.76/345,435.48
  6. Step 6: Final answer
    x = 163,200.86

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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.