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Finding the Fourth Proportional to 239,801.60, 359,932.80 and 121,606.40

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Solution

The fourth proportional to 239,801.60, 359,932.80 and 121,606.40 is: 182,526.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,801.60 : 359,932.80 = 121,606.40 : x
  2. Step 2: Convert to fraction form
    239,801.60/359,932.80 = 121,606.40/x
  3. Step 3: Cross multiply
    239,801.60x = 359,932.80 × 121,606.40
  4. Step 4: Simplify right side
    239,801.60x = 43,770,132,049.92
  5. Step 5: Solve for x
    x = 43,770,132,049.92/239,801.60
  6. Step 6: Final answer
    x = 182,526.44

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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.