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Finding the Fourth Proportional to 344,660.40, 516,990.87 and 108,021.47

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Solution

The fourth proportional to 344,660.40, 516,990.87 and 108,021.47 is: 162,032.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,660.40 : 516,990.87 = 108,021.47 : x
  2. Step 2: Convert to fraction form
    344,660.40/516,990.87 = 108,021.47/x
  3. Step 3: Cross multiply
    344,660.40x = 516,990.87 × 108,021.47
  4. Step 4: Simplify right side
    344,660.40x = 55,846,111,169.02
  5. Step 5: Solve for x
    x = 55,846,111,169.02/344,660.40
  6. Step 6: Final answer
    x = 162,032.28

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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.