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Finding the Fourth Proportional to 347,105.25, 520,458.62 and 136,628.37

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Solution

The fourth proportional to 347,105.25, 520,458.62 and 136,628.37 is: 204,864.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,105.25 : 520,458.62 = 136,628.37 : x
  2. Step 2: Convert to fraction form
    347,105.25/520,458.62 = 136,628.37/x
  3. Step 3: Cross multiply
    347,105.25x = 520,458.62 × 136,628.37
  4. Step 4: Simplify right side
    347,105.25x = 71,109,412,219.91
  5. Step 5: Solve for x
    x = 71,109,412,219.91/347,105.25
  6. Step 6: Final answer
    x = 204,864.12

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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.