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Finding the Fourth Proportional to 375,223.86, 517,809.78 and 203,143.64

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Solution

The fourth proportional to 375,223.86, 517,809.78 and 203,143.64 is: 280,338.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,223.86 : 517,809.78 = 203,143.64 : x
  2. Step 2: Convert to fraction form
    375,223.86/517,809.78 = 203,143.64/x
  3. Step 3: Cross multiply
    375,223.86x = 517,809.78 × 203,143.64
  4. Step 4: Simplify right side
    375,223.86x = 105,189,760,947.75
  5. Step 5: Solve for x
    x = 105,189,760,947.75/375,223.86
  6. Step 6: Final answer
    x = 280,338.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.