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Finding the Fourth Proportional to 248,589.57, 343,028.05 and 139,676.62

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Solution

The fourth proportional to 248,589.57, 343,028.05 and 139,676.62 is: 192,739.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,589.57 : 343,028.05 = 139,676.62 : x
  2. Step 2: Convert to fraction form
    248,589.57/343,028.05 = 139,676.62/x
  3. Step 3: Cross multiply
    248,589.57x = 343,028.05 × 139,676.62
  4. Step 4: Simplify right side
    248,589.57x = 47,912,998,025.61
  5. Step 5: Solve for x
    x = 47,912,998,025.61/248,589.57
  6. Step 6: Final answer
    x = 192,739.37

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1.5x scale

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.