Home / 386,016.62-579,025.17-105,512.78

Finding the Fourth Proportional to 386,016.62, 579,025.17 and 105,512.78

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Solution

The fourth proportional to 386,016.62, 579,025.17 and 105,512.78 is: 158,269.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,016.62 : 579,025.17 = 105,512.78 : x
  2. Step 2: Convert to fraction form
    386,016.62/579,025.17 = 105,512.78/x
  3. Step 3: Cross multiply
    386,016.62x = 579,025.17 × 105,512.78
  4. Step 4: Simplify right side
    386,016.62x = 61,094,555,376.67
  5. Step 5: Solve for x
    x = 61,094,555,376.67/386,016.62
  6. Step 6: Final answer
    x = 158,269.24

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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.