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Finding the Fourth Proportional to 344,648.80, 516,989.40 and 107,999.20

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Solution

The fourth proportional to 344,648.80, 516,989.40 and 107,999.20 is: 162,003.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,648.80 : 516,989.40 = 107,999.20 : x
  2. Step 2: Convert to fraction form
    344,648.80/516,989.40 = 107,999.20/x
  3. Step 3: Cross multiply
    344,648.80x = 516,989.40 × 107,999.20
  4. Step 4: Simplify right side
    344,648.80x = 55,834,441,608.48
  5. Step 5: Solve for x
    x = 55,834,441,608.48/344,648.80
  6. Step 6: Final answer
    x = 162,003.88

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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.