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Finding the Fourth Proportional to 203,370.96, 305,062.86 and 70,258.80

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Solution

The fourth proportional to 203,370.96, 305,062.86 and 70,258.80 is: 105,390.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,370.96 : 305,062.86 = 70,258.80 : x
  2. Step 2: Convert to fraction form
    203,370.96/305,062.86 = 70,258.80/x
  3. Step 3: Cross multiply
    203,370.96x = 305,062.86 × 70,258.80
  4. Step 4: Simplify right side
    203,370.96x = 21,433,350,468.17
  5. Step 5: Solve for x
    x = 21,433,350,468.17/203,370.96
  6. Step 6: Final answer
    x = 105,390.42

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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.