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Finding the Fourth Proportional to 436,808.20, 655,212.30 and 259,223.80

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Solution

The fourth proportional to 436,808.20, 655,212.30 and 259,223.80 is: 388,835.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,808.20 : 655,212.30 = 259,223.80 : x
  2. Step 2: Convert to fraction form
    436,808.20/655,212.30 = 259,223.80/x
  3. Step 3: Cross multiply
    436,808.20x = 655,212.30 × 259,223.80
  4. Step 4: Simplify right side
    436,808.20x = 169,846,622,212.74
  5. Step 5: Solve for x
    x = 169,846,622,212.74/436,808.20
  6. Step 6: Final answer
    x = 388,835.70

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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.