Home / 309,922.01-465,062.51-129,991.43

Finding the Fourth Proportional to 309,922.01, 465,062.51 and 129,991.43

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Solution

The fourth proportional to 309,922.01, 465,062.51 and 129,991.43 is: 195,062.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,922.01 : 465,062.51 = 129,991.43 : x
  2. Step 2: Convert to fraction form
    309,922.01/465,062.51 = 129,991.43/x
  3. Step 3: Cross multiply
    309,922.01x = 465,062.51 × 129,991.43
  4. Step 4: Simplify right side
    309,922.01x = 60,454,137,739.02
  5. Step 5: Solve for x
    x = 60,454,137,739.02/309,922.01
  6. Step 6: Final answer
    x = 195,062.42

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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.