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Finding the Fourth Proportional to 203,772.20, 305,671.80 and 54,010.40

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Solution

The fourth proportional to 203,772.20, 305,671.80 and 54,010.40 is: 81,019.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,772.20 : 305,671.80 = 54,010.40 : x
  2. Step 2: Convert to fraction form
    203,772.20/305,671.80 = 54,010.40/x
  3. Step 3: Cross multiply
    203,772.20x = 305,671.80 × 54,010.40
  4. Step 4: Simplify right side
    203,772.20x = 16,509,456,186.72
  5. Step 5: Solve for x
    x = 16,509,456,186.72/203,772.20
  6. Step 6: Final answer
    x = 81,019.18

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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.