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Finding the Fourth Proportional to 239,407.39, 330,384.41 and 131,981.26

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Solution

The fourth proportional to 239,407.39, 330,384.41 and 131,981.26 is: 182,135.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,407.39 : 330,384.41 = 131,981.26 : x
  2. Step 2: Convert to fraction form
    239,407.39/330,384.41 = 131,981.26/x
  3. Step 3: Cross multiply
    239,407.39x = 330,384.41 × 131,981.26
  4. Step 4: Simplify right side
    239,407.39x = 43,604,551,877.85
  5. Step 5: Solve for x
    x = 43,604,551,877.85/239,407.39
  6. Step 6: Final answer
    x = 182,135.36

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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.