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Finding the Fourth Proportional to 203,637.56, 305,383.14 and 70,481.72

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Solution

The fourth proportional to 203,637.56, 305,383.14 and 70,481.72 is: 105,697.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,637.56 : 305,383.14 = 70,481.72 : x
  2. Step 2: Convert to fraction form
    203,637.56/305,383.14 = 70,481.72/x
  3. Step 3: Cross multiply
    203,637.56x = 305,383.14 × 70,481.72
  4. Step 4: Simplify right side
    203,637.56x = 21,523,928,966.20
  5. Step 5: Solve for x
    x = 21,523,928,966.20/203,637.56
  6. Step 6: Final answer
    x = 105,697.24

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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.