Home / 386,645.42-533,569.92-214,589.78

Finding the Fourth Proportional to 386,645.42, 533,569.92 and 214,589.78

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Solution

The fourth proportional to 386,645.42, 533,569.92 and 214,589.78 is: 296,133.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,645.42 : 533,569.92 = 214,589.78 : x
  2. Step 2: Convert to fraction form
    386,645.42/533,569.92 = 214,589.78/x
  3. Step 3: Cross multiply
    386,645.42x = 533,569.92 × 214,589.78
  4. Step 4: Simplify right side
    386,645.42x = 114,498,651,747.42
  5. Step 5: Solve for x
    x = 114,498,651,747.42/386,645.42
  6. Step 6: Final answer
    x = 296,133.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.