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Finding the Fourth Proportional to 425,803.76, 587,617.70 and 275,163.20

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Solution

The fourth proportional to 425,803.76, 587,617.70 and 275,163.20 is: 379,730.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,803.76 : 587,617.70 = 275,163.20 : x
  2. Step 2: Convert to fraction form
    425,803.76/587,617.70 = 275,163.20/x
  3. Step 3: Cross multiply
    425,803.76x = 587,617.70 × 275,163.20
  4. Step 4: Simplify right side
    425,803.76x = 161,690,766,708.64
  5. Step 5: Solve for x
    x = 161,690,766,708.64/425,803.76
  6. Step 6: Final answer
    x = 379,730.72

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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.