Home / 258,177.28-387,417.49-108,406.05

Finding the Fourth Proportional to 258,177.28, 387,417.49 and 108,406.05

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Solution

The fourth proportional to 258,177.28, 387,417.49 and 108,406.05 is: 162,672.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,177.28 : 387,417.49 = 108,406.05 : x
  2. Step 2: Convert to fraction form
    258,177.28/387,417.49 = 108,406.05/x
  3. Step 3: Cross multiply
    258,177.28x = 387,417.49 × 108,406.05
  4. Step 4: Simplify right side
    258,177.28x = 41,998,399,791.81
  5. Step 5: Solve for x
    x = 41,998,399,791.81/258,177.28
  6. Step 6: Final answer
    x = 162,672.72

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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.