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Finding the Fourth Proportional to 248,306.28, 342,670.40 and 140,880.84

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Solution

The fourth proportional to 248,306.28, 342,670.40 and 140,880.84 is: 194,419.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,306.28 : 342,670.40 = 140,880.84 : x
  2. Step 2: Convert to fraction form
    248,306.28/342,670.40 = 140,880.84/x
  3. Step 3: Cross multiply
    248,306.28x = 342,670.40 × 140,880.84
  4. Step 4: Simplify right side
    248,306.28x = 48,275,693,795.14
  5. Step 5: Solve for x
    x = 48,275,693,795.14/248,306.28
  6. Step 6: Final answer
    x = 194,419.95

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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.