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Finding the Fourth Proportional to 425,255.50, 637,661.78 and 200,555.61

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Solution

The fourth proportional to 425,255.50, 637,661.78 and 200,555.61 is: 300,728.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,255.50 : 637,661.78 = 200,555.61 : x
  2. Step 2: Convert to fraction form
    425,255.50/637,661.78 = 200,555.61/x
  3. Step 3: Cross multiply
    425,255.50x = 637,661.78 × 200,555.61
  4. Step 4: Simplify right side
    425,255.50x = 127,886,644,619.66
  5. Step 5: Solve for x
    x = 127,886,644,619.66/425,255.50
  6. Step 6: Final answer
    x = 300,728.96

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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.