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Finding the Fourth Proportional to 143,304.80, 214,956.90 and 38,123.78

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Solution

The fourth proportional to 143,304.80, 214,956.90 and 38,123.78 is: 57,185.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,304.80 : 214,956.90 = 38,123.78 : x
  2. Step 2: Convert to fraction form
    143,304.80/214,956.90 = 38,123.78/x
  3. Step 3: Cross multiply
    143,304.80x = 214,956.90 × 38,123.78
  4. Step 4: Simplify right side
    143,304.80x = 8,194,968,490.30
  5. Step 5: Solve for x
    x = 8,194,968,490.30/143,304.80
  6. Step 6: Final answer
    x = 57,185.58

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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.