Home / 213,627.48-320,463.18-80,619.72

Finding the Fourth Proportional to 213,627.48, 320,463.18 and 80,619.72

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Solution

The fourth proportional to 213,627.48, 320,463.18 and 80,619.72 is: 120,937.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,627.48 : 320,463.18 = 80,619.72 : x
  2. Step 2: Convert to fraction form
    213,627.48/320,463.18 = 80,619.72/x
  3. Step 3: Cross multiply
    213,627.48x = 320,463.18 × 80,619.72
  4. Step 4: Simplify right side
    213,627.48x = 25,835,651,841.91
  5. Step 5: Solve for x
    x = 25,835,651,841.91/213,627.48
  6. Step 6: Final answer
    x = 120,937.87

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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.