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Finding the Fourth Proportional to 203,617.33, 305,114.28 and 85,224.22

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Solution

The fourth proportional to 203,617.33, 305,114.28 and 85,224.22 is: 127,705.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,617.33 : 305,114.28 = 85,224.22 : x
  2. Step 2: Convert to fraction form
    203,617.33/305,114.28 = 85,224.22/x
  3. Step 3: Cross multiply
    203,617.33x = 305,114.28 × 85,224.22
  4. Step 4: Simplify right side
    203,617.33x = 26,003,126,523.86
  5. Step 5: Solve for x
    x = 26,003,126,523.86/203,617.33
  6. Step 6: Final answer
    x = 127,705.86

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1.5x scale

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.