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Finding the Fourth Proportional to 239,820.50, 330,954.93 and 132,390.61

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Solution

The fourth proportional to 239,820.50, 330,954.93 and 132,390.61 is: 182,700.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,820.50 : 330,954.93 = 132,390.61 : x
  2. Step 2: Convert to fraction form
    239,820.50/330,954.93 = 132,390.61/x
  3. Step 3: Cross multiply
    239,820.50x = 330,954.93 × 132,390.61
  4. Step 4: Simplify right side
    239,820.50x = 43,815,324,237.82
  5. Step 5: Solve for x
    x = 43,815,324,237.82/239,820.50
  6. Step 6: Final answer
    x = 182,700.49

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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.