Home / 248,990.42-343,635.57-138,620.18

Finding the Fourth Proportional to 248,990.42, 343,635.57 and 138,620.18

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Solution

The fourth proportional to 248,990.42, 343,635.57 and 138,620.18 is: 191,311.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,990.42 : 343,635.57 = 138,620.18 : x
  2. Step 2: Convert to fraction form
    248,990.42/343,635.57 = 138,620.18/x
  3. Step 3: Cross multiply
    248,990.42x = 343,635.57 × 138,620.18
  4. Step 4: Simplify right side
    248,990.42x = 47,634,824,567.80
  5. Step 5: Solve for x
    x = 47,634,824,567.80/248,990.42
  6. Step 6: Final answer
    x = 191,311.88

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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.