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Finding the Fourth Proportional to 248,082.56, 342,382.80 and 139,216.88

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Solution

The fourth proportional to 248,082.56, 342,382.80 and 139,216.88 is: 192,135.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,082.56 : 342,382.80 = 139,216.88 : x
  2. Step 2: Convert to fraction form
    248,082.56/342,382.80 = 139,216.88/x
  3. Step 3: Cross multiply
    248,082.56x = 342,382.80 × 139,216.88
  4. Step 4: Simplify right side
    248,082.56x = 47,665,465,181.66
  5. Step 5: Solve for x
    x = 47,665,465,181.66/248,082.56
  6. Step 6: Final answer
    x = 192,135.49

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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.