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Finding the Fourth Proportional to 422,003.16, 582,378.12 and 231,016.56

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Solution

The fourth proportional to 422,003.16, 582,378.12 and 231,016.56 is: 318,810.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,003.16 : 582,378.12 = 231,016.56 : x
  2. Step 2: Convert to fraction form
    422,003.16/582,378.12 = 231,016.56/x
  3. Step 3: Cross multiply
    422,003.16x = 582,378.12 × 231,016.56
  4. Step 4: Simplify right side
    422,003.16x = 134,538,989,901.67
  5. Step 5: Solve for x
    x = 134,538,989,901.67/422,003.16
  6. Step 6: Final answer
    x = 318,810.38

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1.5x scale

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.