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Finding the Fourth Proportional to 422,601.11, 633,901.67 and 256,039.19

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Solution

The fourth proportional to 422,601.11, 633,901.67 and 256,039.19 is: 384,058.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,601.11 : 633,901.67 = 256,039.19 : x
  2. Step 2: Convert to fraction form
    422,601.11/633,901.67 = 256,039.19/x
  3. Step 3: Cross multiply
    422,601.11x = 633,901.67 × 256,039.19
  4. Step 4: Simplify right side
    422,601.11x = 162,303,670,126.45
  5. Step 5: Solve for x
    x = 162,303,670,126.45/422,601.11
  6. Step 6: Final answer
    x = 384,058.79

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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.