Home / 386,249.70-579,432.15-136,912.10

Finding the Fourth Proportional to 386,249.70, 579,432.15 and 136,912.10

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Solution

The fourth proportional to 386,249.70, 579,432.15 and 136,912.10 is: 205,388.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,249.70 : 579,432.15 = 136,912.10 : x
  2. Step 2: Convert to fraction form
    386,249.70/579,432.15 = 136,912.10/x
  3. Step 3: Cross multiply
    386,249.70x = 579,432.15 × 136,912.10
  4. Step 4: Simplify right side
    386,249.70x = 79,331,272,464.02
  5. Step 5: Solve for x
    x = 79,331,272,464.02/386,249.70
  6. Step 6: Final answer
    x = 205,388.57

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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.