Home / 386,229.20-579,401.40-136,891.60

Finding the Fourth Proportional to 386,229.20, 579,401.40 and 136,891.60

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Solution

The fourth proportional to 386,229.20, 579,401.40 and 136,891.60 is: 205,357.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,229.20 : 579,401.40 = 136,891.60 : x
  2. Step 2: Convert to fraction form
    386,229.20/579,401.40 = 136,891.60/x
  3. Step 3: Cross multiply
    386,229.20x = 579,401.40 × 136,891.60
  4. Step 4: Simplify right side
    386,229.20x = 79,315,184,688.24
  5. Step 5: Solve for x
    x = 79,315,184,688.24/386,229.20
  6. Step 6: Final answer
    x = 205,357.82

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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.