Home / 386,839.80-580,274.28-106,378.92

Finding the Fourth Proportional to 386,839.80, 580,274.28 and 106,378.92

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Solution

The fourth proportional to 386,839.80, 580,274.28 and 106,378.92 is: 159,572.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,839.80 : 580,274.28 = 106,378.92 : x
  2. Step 2: Convert to fraction form
    386,839.80/580,274.28 = 106,378.92/x
  3. Step 3: Cross multiply
    386,839.80x = 580,274.28 × 106,378.92
  4. Step 4: Simplify right side
    386,839.80x = 61,728,951,210.18
  5. Step 5: Solve for x
    x = 61,728,951,210.18/386,839.80
  6. Step 6: Final answer
    x = 159,572.39

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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.