Home / 422,943.38-634,214.19-245,504.78

Finding the Fourth Proportional to 422,943.38, 634,214.19 and 245,504.78

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Solution

The fourth proportional to 422,943.38, 634,214.19 and 245,504.78 is: 368,140.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,943.38 : 634,214.19 = 245,504.78 : x
  2. Step 2: Convert to fraction form
    422,943.38/634,214.19 = 245,504.78/x
  3. Step 3: Cross multiply
    422,943.38x = 634,214.19 × 245,504.78
  4. Step 4: Simplify right side
    422,943.38x = 155,702,615,188.83
  5. Step 5: Solve for x
    x = 155,702,615,188.83/422,943.38
  6. Step 6: Final answer
    x = 368,140.57

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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.