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Finding the Fourth Proportional to 337,218.78, 505,392.09 and 252,312.78

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Solution

The fourth proportional to 337,218.78, 505,392.09 and 252,312.78 is: 378,142.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    337,218.78 : 505,392.09 = 252,312.78 : x
  2. Step 2: Convert to fraction form
    337,218.78/505,392.09 = 252,312.78/x
  3. Step 3: Cross multiply
    337,218.78x = 505,392.09 × 252,312.78
  4. Step 4: Simplify right side
    337,218.78x = 127,516,883,217.91
  5. Step 5: Solve for x
    x = 127,516,883,217.91/337,218.78
  6. Step 6: Final answer
    x = 378,142.89

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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.