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Finding the Fourth Proportional to 281,603.48, 422,406.90 and 71,241.32

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Solution

The fourth proportional to 281,603.48, 422,406.90 and 71,241.32 is: 106,862.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,603.48 : 422,406.90 = 71,241.32 : x
  2. Step 2: Convert to fraction form
    281,603.48/422,406.90 = 71,241.32/x
  3. Step 3: Cross multiply
    281,603.48x = 422,406.90 × 71,241.32
  4. Step 4: Simplify right side
    281,603.48x = 30,092,825,133.11
  5. Step 5: Solve for x
    x = 30,092,825,133.11/281,603.48
  6. Step 6: Final answer
    x = 106,862.41

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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.