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Finding the Fourth Proportional to 422,863.81, 583,858.31 and 272,223.25

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Solution

The fourth proportional to 422,863.81, 583,858.31 and 272,223.25 is: 375,865.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,863.81 : 583,858.31 = 272,223.25 : x
  2. Step 2: Convert to fraction form
    422,863.81/583,858.31 = 272,223.25/x
  3. Step 3: Cross multiply
    422,863.81x = 583,858.31 × 272,223.25
  4. Step 4: Simplify right side
    422,863.81x = 158,939,805,326.59
  5. Step 5: Solve for x
    x = 158,939,805,326.59/422,863.81
  6. Step 6: Final answer
    x = 375,865.24

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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.