Home / 386,319.20-579,469.95-102,029.78

Finding the Fourth Proportional to 386,319.20, 579,469.95 and 102,029.78

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Solution

The fourth proportional to 386,319.20, 579,469.95 and 102,029.78 is: 153,042.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,319.20 : 579,469.95 = 102,029.78 : x
  2. Step 2: Convert to fraction form
    386,319.20/579,469.95 = 102,029.78/x
  3. Step 3: Cross multiply
    386,319.20x = 579,469.95 × 102,029.78
  4. Step 4: Simplify right side
    386,319.20x = 59,123,192,963.79
  5. Step 5: Solve for x
    x = 59,123,192,963.79/386,319.20
  6. Step 6: Final answer
    x = 153,042.34

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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.