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Finding the Fourth Proportional to 248,429.80, 372,644.70 and 178,964.20

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Solution

The fourth proportional to 248,429.80, 372,644.70 and 178,964.20 is: 268,446.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,429.80 : 372,644.70 = 178,964.20 : x
  2. Step 2: Convert to fraction form
    248,429.80/372,644.70 = 178,964.20/x
  3. Step 3: Cross multiply
    248,429.80x = 372,644.70 × 178,964.20
  4. Step 4: Simplify right side
    248,429.80x = 66,690,060,619.74
  5. Step 5: Solve for x
    x = 66,690,060,619.74/248,429.80
  6. Step 6: Final answer
    x = 268,446.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.