Home / 386,449.50-579,736.20-120,271.56

Finding the Fourth Proportional to 386,449.50, 579,736.20 and 120,271.56

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Solution

The fourth proportional to 386,449.50, 579,736.20 and 120,271.56 is: 180,426.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,449.50 : 579,736.20 = 120,271.56 : x
  2. Step 2: Convert to fraction form
    386,449.50/579,736.20 = 120,271.56/x
  3. Step 3: Cross multiply
    386,449.50x = 579,736.20 × 120,271.56
  4. Step 4: Simplify right side
    386,449.50x = 69,725,777,162.47
  5. Step 5: Solve for x
    x = 69,725,777,162.47/386,449.50
  6. Step 6: Final answer
    x = 180,426.62

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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.