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Finding the Fourth Proportional to 203,948.94, 305,891.79 and 104,182.86

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Solution

The fourth proportional to 203,948.94, 305,891.79 and 104,182.86 is: 156,258.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,948.94 : 305,891.79 = 104,182.86 : x
  2. Step 2: Convert to fraction form
    203,948.94/305,891.79 = 104,182.86/x
  3. Step 3: Cross multiply
    203,948.94x = 305,891.79 × 104,182.86
  4. Step 4: Simplify right side
    203,948.94x = 31,868,681,532.72
  5. Step 5: Solve for x
    x = 31,868,681,532.72/203,948.94
  6. Step 6: Final answer
    x = 156,258.14

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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.