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Finding the Fourth Proportional to 203,638.20, 305,486.10 and 63,382.20

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Solution

The fourth proportional to 203,638.20, 305,486.10 and 63,382.20 is: 95,082.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,638.20 : 305,486.10 = 63,382.20 : x
  2. Step 2: Convert to fraction form
    203,638.20/305,486.10 = 63,382.20/x
  3. Step 3: Cross multiply
    203,638.20x = 305,486.10 × 63,382.20
  4. Step 4: Simplify right side
    203,638.20x = 19,362,381,087.42
  5. Step 5: Solve for x
    x = 19,362,381,087.42/203,638.20
  6. Step 6: Final answer
    x = 95,082.26

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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.