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Finding the Fourth Proportional to 239,400, 330,368.38 and 131,967.71

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Solution

The fourth proportional to 239,400, 330,368.38 and 131,967.71 is: 182,113.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,400 : 330,368.38 = 131,967.71 : x
  2. Step 2: Convert to fraction form
    239,400/330,368.38 = 131,967.71/x
  3. Step 3: Cross multiply
    239,400x = 330,368.38 × 131,967.71
  4. Step 4: Simplify right side
    239,400x = 43,597,958,565.01
  5. Step 5: Solve for x
    x = 43,597,958,565.01/239,400
  6. Step 6: Final answer
    x = 182,113.44

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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.