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Finding the Fourth Proportional to 378,812.43, 567,529.53 and 220,561.11

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Solution

The fourth proportional to 378,812.43, 567,529.53 and 220,561.11 is: 330,440.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,812.43 : 567,529.53 = 220,561.11 : x
  2. Step 2: Convert to fraction form
    378,812.43/567,529.53 = 220,561.11/x
  3. Step 3: Cross multiply
    378,812.43x = 567,529.53 × 220,561.11
  4. Step 4: Simplify right side
    378,812.43x = 125,174,940,256.93
  5. Step 5: Solve for x
    x = 125,174,940,256.93/378,812.43
  6. Step 6: Final answer
    x = 330,440.43

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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.