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Finding the Fourth Proportional to 422,246.52, 633,220.40 and 122,664.78

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Solution

The fourth proportional to 422,246.52, 633,220.40 and 122,664.78 is: 183,953.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,246.52 : 633,220.40 = 122,664.78 : x
  2. Step 2: Convert to fraction form
    422,246.52/633,220.40 = 122,664.78/x
  3. Step 3: Cross multiply
    422,246.52x = 633,220.40 × 122,664.78
  4. Step 4: Simplify right side
    422,246.52x = 77,673,837,278.09
  5. Step 5: Solve for x
    x = 77,673,837,278.09/422,246.52
  6. Step 6: Final answer
    x = 183,953.77

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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.