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Finding the Fourth Proportional to 208,383.42, 312,618.32 and 83,734.14

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Solution

The fourth proportional to 208,383.42, 312,618.32 and 83,734.14 is: 125,618.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,383.42 : 312,618.32 = 83,734.14 : x
  2. Step 2: Convert to fraction form
    208,383.42/312,618.32 = 83,734.14/x
  3. Step 3: Cross multiply
    208,383.42x = 312,618.32 × 83,734.14
  4. Step 4: Simplify right side
    208,383.42x = 26,176,826,173.44
  5. Step 5: Solve for x
    x = 26,176,826,173.44/208,383.42
  6. Step 6: Final answer
    x = 125,618.56

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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.