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Finding the Fourth Proportional to 248,436.40, 372,217.20 and 203,821.60

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Solution

The fourth proportional to 248,436.40, 372,217.20 and 203,821.60 is: 305,373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,436.40 : 372,217.20 = 203,821.60 : x
  2. Step 2: Convert to fraction form
    248,436.40/372,217.20 = 203,821.60/x
  3. Step 3: Cross multiply
    248,436.40x = 372,217.20 × 203,821.60
  4. Step 4: Simplify right side
    248,436.40x = 75,865,905,251.52
  5. Step 5: Solve for x
    x = 75,865,905,251.52/248,436.40
  6. Step 6: Final answer
    x = 305,373.55

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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.