Home / 325,147.20-487,029.60-213,172.80

Finding the Fourth Proportional to 325,147.20, 487,029.60 and 213,172.80

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Solution

The fourth proportional to 325,147.20, 487,029.60 and 213,172.80 is: 319,306.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,147.20 : 487,029.60 = 213,172.80 : x
  2. Step 2: Convert to fraction form
    325,147.20/487,029.60 = 213,172.80/x
  3. Step 3: Cross multiply
    325,147.20x = 487,029.60 × 213,172.80
  4. Step 4: Simplify right side
    325,147.20x = 103,821,463,514.88
  5. Step 5: Solve for x
    x = 103,821,463,514.88/325,147.20
  6. Step 6: Final answer
    x = 319,306.04

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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.