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Finding the Fourth Proportional to 422,840.48, 633,016.56 and 282,250.40

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Solution

The fourth proportional to 422,840.48, 633,016.56 and 282,250.40 is: 422,545.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,840.48 : 633,016.56 = 282,250.40 : x
  2. Step 2: Convert to fraction form
    422,840.48/633,016.56 = 282,250.40/x
  3. Step 3: Cross multiply
    422,840.48x = 633,016.56 × 282,250.40
  4. Step 4: Simplify right side
    422,840.48x = 178,669,177,266.62
  5. Step 5: Solve for x
    x = 178,669,177,266.62/422,840.48
  6. Step 6: Final answer
    x = 422,545.11

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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.