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Finding the Fourth Proportional to 449,422.32, 620,194.20 and 248,214

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Solution

The fourth proportional to 449,422.32, 620,194.20 and 248,214 is: 342,530.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,422.32 : 620,194.20 = 248,214 : x
  2. Step 2: Convert to fraction form
    449,422.32/620,194.20 = 248,214/x
  3. Step 3: Cross multiply
    449,422.32x = 620,194.20 × 248,214
  4. Step 4: Simplify right side
    449,422.32x = 153,940,883,158.80
  5. Step 5: Solve for x
    x = 153,940,883,158.80/449,422.32
  6. Step 6: Final answer
    x = 342,530.57

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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.