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Finding the Fourth Proportional to 437,071.80, 655,218.90 and 259,390.20

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Solution

The fourth proportional to 437,071.80, 655,218.90 and 259,390.20 is: 388,854.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,071.80 : 655,218.90 = 259,390.20 : x
  2. Step 2: Convert to fraction form
    437,071.80/655,218.90 = 259,390.20/x
  3. Step 3: Cross multiply
    437,071.80x = 655,218.90 × 259,390.20
  4. Step 4: Simplify right side
    437,071.80x = 169,957,361,514.78
  5. Step 5: Solve for x
    x = 169,957,361,514.78/437,071.80
  6. Step 6: Final answer
    x = 388,854.56

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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.