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Finding the Fourth Proportional to 436,000.80, 654,418.80 and 225,789.60

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Solution

The fourth proportional to 436,000.80, 654,418.80 and 225,789.60 is: 338,900.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,000.80 : 654,418.80 = 225,789.60 : x
  2. Step 2: Convert to fraction form
    436,000.80/654,418.80 = 225,789.60/x
  3. Step 3: Cross multiply
    436,000.80x = 654,418.80 × 225,789.60
  4. Step 4: Simplify right side
    436,000.80x = 147,760,959,084.48
  5. Step 5: Solve for x
    x = 147,760,959,084.48/436,000.80
  6. Step 6: Final answer
    x = 338,900.66

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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.