Home / 389,103.32-583,724.10-132,921.92

Finding the Fourth Proportional to 389,103.32, 583,724.10 and 132,921.92

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Solution

The fourth proportional to 389,103.32, 583,724.10 and 132,921.92 is: 199,406.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,103.32 : 583,724.10 = 132,921.92 : x
  2. Step 2: Convert to fraction form
    389,103.32/583,724.10 = 132,921.92/x
  3. Step 3: Cross multiply
    389,103.32x = 583,724.10 × 132,921.92
  4. Step 4: Simplify right side
    389,103.32x = 77,589,728,122.27
  5. Step 5: Solve for x
    x = 77,589,728,122.27/389,103.32
  6. Step 6: Final answer
    x = 199,406.49

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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.