Home / 386,552.20-579,930.70-137,208.20

Finding the Fourth Proportional to 386,552.20, 579,930.70 and 137,208.20

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Solution

The fourth proportional to 386,552.20, 579,930.70 and 137,208.20 is: 205,848.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,552.20 : 579,930.70 = 137,208.20 : x
  2. Step 2: Convert to fraction form
    386,552.20/579,930.70 = 137,208.20/x
  3. Step 3: Cross multiply
    386,552.20x = 579,930.70 × 137,208.20
  4. Step 4: Simplify right side
    386,552.20x = 79,571,247,471.74
  5. Step 5: Solve for x
    x = 79,571,247,471.74/386,552.20
  6. Step 6: Final answer
    x = 205,848.65

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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.