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Finding the Fourth Proportional to 203,903.55, 305,899.10 and 79,244.55

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Solution

The fourth proportional to 203,903.55, 305,899.10 and 79,244.55 is: 118,883.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,903.55 : 305,899.10 = 79,244.55 : x
  2. Step 2: Convert to fraction form
    203,903.55/305,899.10 = 79,244.55/x
  3. Step 3: Cross multiply
    203,903.55x = 305,899.10 × 79,244.55
  4. Step 4: Simplify right side
    203,903.55x = 24,240,836,128.68
  5. Step 5: Solve for x
    x = 24,240,836,128.68/203,903.55
  6. Step 6: Final answer
    x = 118,883.84

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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.