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Finding the Fourth Proportional to 239,793.20, 359,689.70 and 71,312.84

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Solution

The fourth proportional to 239,793.20, 359,689.70 and 71,312.84 is: 106,969.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,793.20 : 359,689.70 = 71,312.84 : x
  2. Step 2: Convert to fraction form
    239,793.20/359,689.70 = 71,312.84/x
  3. Step 3: Cross multiply
    239,793.20x = 359,689.70 × 71,312.84
  4. Step 4: Simplify right side
    239,793.20x = 25,650,494,025.75
  5. Step 5: Solve for x
    x = 25,650,494,025.75/239,793.20
  6. Step 6: Final answer
    x = 106,969.23

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1.5x scale

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.