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Finding the Fourth Proportional to 203,625.20, 305,437.80 and 55,881.20

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Solution

The fourth proportional to 203,625.20, 305,437.80 and 55,881.20 is: 83,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,625.20 : 305,437.80 = 55,881.20 : x
  2. Step 2: Convert to fraction form
    203,625.20/305,437.80 = 55,881.20/x
  3. Step 3: Cross multiply
    203,625.20x = 305,437.80 × 55,881.20
  4. Step 4: Simplify right side
    203,625.20x = 17,068,230,789.36
  5. Step 5: Solve for x
    x = 17,068,230,789.36/203,625.20
  6. Step 6: Final answer
    x = 83,821.80

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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.