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Finding the Fourth Proportional to 203,928.42, 305,892.63 and 79,298.58

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Solution

The fourth proportional to 203,928.42, 305,892.63 and 79,298.58 is: 118,947.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,928.42 : 305,892.63 = 79,298.58 : x
  2. Step 2: Convert to fraction form
    203,928.42/305,892.63 = 79,298.58/x
  3. Step 3: Cross multiply
    203,928.42x = 305,892.63 × 79,298.58
  4. Step 4: Simplify right side
    203,928.42x = 24,256,851,191.47
  5. Step 5: Solve for x
    x = 24,256,851,191.47/203,928.42
  6. Step 6: Final answer
    x = 118,947.87

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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.