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Finding the Fourth Proportional to 203,872.70, 305,809.05 and 63,613.10

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Solution

The fourth proportional to 203,872.70, 305,809.05 and 63,613.10 is: 95,419.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,872.70 : 305,809.05 = 63,613.10 : x
  2. Step 2: Convert to fraction form
    203,872.70/305,809.05 = 63,613.10/x
  3. Step 3: Cross multiply
    203,872.70x = 305,809.05 × 63,613.10
  4. Step 4: Simplify right side
    203,872.70x = 19,453,461,678.56
  5. Step 5: Solve for x
    x = 19,453,461,678.56/203,872.70
  6. Step 6: Final answer
    x = 95,419.65

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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.