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Finding the Fourth Proportional to 239,880.20, 359,821.53 and 99,638.96

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Solution

The fourth proportional to 239,880.20, 359,821.53 and 99,638.96 is: 149,458.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,880.20 : 359,821.53 = 99,638.96 : x
  2. Step 2: Convert to fraction form
    239,880.20/359,821.53 = 99,638.96/x
  3. Step 3: Cross multiply
    239,880.20x = 359,821.53 × 99,638.96
  4. Step 4: Simplify right side
    239,880.20x = 35,852,241,235.70
  5. Step 5: Solve for x
    x = 35,852,241,235.70/239,880.20
  6. Step 6: Final answer
    x = 149,458.95

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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.