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Finding the Fourth Proportional to 239,860.40, 359,785.60 and 79,947.92

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Solution

The fourth proportional to 239,860.40, 359,785.60 and 79,947.92 is: 119,920.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,860.40 : 359,785.60 = 79,947.92 : x
  2. Step 2: Convert to fraction form
    239,860.40/359,785.60 = 79,947.92/x
  3. Step 3: Cross multiply
    239,860.40x = 359,785.60 × 79,947.92
  4. Step 4: Simplify right side
    239,860.40x = 28,764,110,365.95
  5. Step 5: Solve for x
    x = 28,764,110,365.95/239,860.40
  6. Step 6: Final answer
    x = 119,920.21

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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.