Home / 386,532.11-579,835.05-120,221.12

Finding the Fourth Proportional to 386,532.11, 579,835.05 and 120,221.12

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Solution

The fourth proportional to 386,532.11, 579,835.05 and 120,221.12 is: 180,343.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,532.11 : 579,835.05 = 120,221.12 : x
  2. Step 2: Convert to fraction form
    386,532.11/579,835.05 = 120,221.12/x
  3. Step 3: Cross multiply
    386,532.11x = 579,835.05 × 120,221.12
  4. Step 4: Simplify right side
    386,532.11x = 69,708,416,227.08
  5. Step 5: Solve for x
    x = 69,708,416,227.08/386,532.11
  6. Step 6: Final answer
    x = 180,343.15

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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.