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Finding the Fourth Proportional to 239,794.80, 359,983.80 and 121,405.20

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Solution

The fourth proportional to 239,794.80, 359,983.80 and 121,405.20 is: 182,255.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,794.80 : 359,983.80 = 121,405.20 : x
  2. Step 2: Convert to fraction form
    239,794.80/359,983.80 = 121,405.20/x
  3. Step 3: Cross multiply
    239,794.80x = 359,983.80 × 121,405.20
  4. Step 4: Simplify right side
    239,794.80x = 43,703,905,235.76
  5. Step 5: Solve for x
    x = 43,703,905,235.76/239,794.80
  6. Step 6: Final answer
    x = 182,255.43

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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.