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Finding the Fourth Proportional to 436,837.20, 655,255.80 and 259,252.80

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Solution

The fourth proportional to 436,837.20, 655,255.80 and 259,252.80 is: 388,879.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,837.20 : 655,255.80 = 259,252.80 : x
  2. Step 2: Convert to fraction form
    436,837.20/655,255.80 = 259,252.80/x
  3. Step 3: Cross multiply
    436,837.20x = 655,255.80 × 259,252.80
  4. Step 4: Simplify right side
    436,837.20x = 169,876,900,866.24
  5. Step 5: Solve for x
    x = 169,876,900,866.24/436,837.20
  6. Step 6: Final answer
    x = 388,879.20

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1.5x scale

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.