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Finding the Fourth Proportional to 248,286.28, 342,642.80 and 140,860.84

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Solution

The fourth proportional to 248,286.28, 342,642.80 and 140,860.84 is: 194,392.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,286.28 : 342,642.80 = 140,860.84 : x
  2. Step 2: Convert to fraction form
    248,286.28/342,642.80 = 140,860.84/x
  3. Step 3: Cross multiply
    248,286.28x = 342,642.80 × 140,860.84
  4. Step 4: Simplify right side
    248,286.28x = 48,264,952,627.95
  5. Step 5: Solve for x
    x = 48,264,952,627.95/248,286.28
  6. Step 6: Final answer
    x = 194,392.35

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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.