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Finding the Fourth Proportional to 436,818.70, 655,228.05 and 259,234.30

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Solution

The fourth proportional to 436,818.70, 655,228.05 and 259,234.30 is: 388,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,818.70 : 655,228.05 = 259,234.30 : x
  2. Step 2: Convert to fraction form
    436,818.70/655,228.05 = 259,234.30/x
  3. Step 3: Cross multiply
    436,818.70x = 655,228.05 × 259,234.30
  4. Step 4: Simplify right side
    436,818.70x = 169,857,584,882.12
  5. Step 5: Solve for x
    x = 169,857,584,882.12/436,818.70
  6. Step 6: Final answer
    x = 388,851.45

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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.