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Finding the Fourth Proportional to 425,805.76, 587,620.46 and 275,165.20

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Solution

The fourth proportional to 425,805.76, 587,620.46 and 275,165.20 is: 379,733.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,805.76 : 587,620.46 = 275,165.20 : x
  2. Step 2: Convert to fraction form
    425,805.76/587,620.46 = 275,165.20/x
  3. Step 3: Cross multiply
    425,805.76x = 587,620.46 × 275,165.20
  4. Step 4: Simplify right side
    425,805.76x = 161,692,701,399.99
  5. Step 5: Solve for x
    x = 161,692,701,399.99/425,805.76
  6. Step 6: Final answer
    x = 379,733.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.