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Finding the Fourth Proportional to 422,666.25, 583,279.56 and 231,680.94

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Solution

The fourth proportional to 422,666.25, 583,279.56 and 231,680.94 is: 319,719.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,666.25 : 583,279.56 = 231,680.94 : x
  2. Step 2: Convert to fraction form
    422,666.25/583,279.56 = 231,680.94/x
  3. Step 3: Cross multiply
    422,666.25x = 583,279.56 × 231,680.94
  4. Step 4: Simplify right side
    422,666.25x = 135,134,756,743.59
  5. Step 5: Solve for x
    x = 135,134,756,743.59/422,666.25
  6. Step 6: Final answer
    x = 319,719.77

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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.