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Finding the Fourth Proportional to 422,750.75, 634,191.73 and 142,246.13

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Solution

The fourth proportional to 422,750.75, 634,191.73 and 142,246.13 is: 213,391.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,750.75 : 634,191.73 = 142,246.13 : x
  2. Step 2: Convert to fraction form
    422,750.75/634,191.73 = 142,246.13/x
  3. Step 3: Cross multiply
    422,750.75x = 634,191.73 × 142,246.13
  4. Step 4: Simplify right side
    422,750.75x = 90,211,315,743.93
  5. Step 5: Solve for x
    x = 90,211,315,743.93/422,750.75
  6. Step 6: Final answer
    x = 213,391.26

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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.