Home / 386,448.20-579,672.30-102,138.20

Finding the Fourth Proportional to 386,448.20, 579,672.30 and 102,138.20

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Solution

The fourth proportional to 386,448.20, 579,672.30 and 102,138.20 is: 153,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,448.20 : 579,672.30 = 102,138.20 : x
  2. Step 2: Convert to fraction form
    386,448.20/579,672.30 = 102,138.20/x
  3. Step 3: Cross multiply
    386,448.20x = 579,672.30 × 102,138.20
  4. Step 4: Simplify right side
    386,448.20x = 59,206,685,311.86
  5. Step 5: Solve for x
    x = 59,206,685,311.86/386,448.20
  6. Step 6: Final answer
    x = 153,207.30

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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.