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Finding the Fourth Proportional to 449,874, 620,827.20 and 248,670

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Solution

The fourth proportional to 449,874, 620,827.20 and 248,670 is: 343,165.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,874 : 620,827.20 = 248,670 : x
  2. Step 2: Convert to fraction form
    449,874/620,827.20 = 248,670/x
  3. Step 3: Cross multiply
    449,874x = 620,827.20 × 248,670
  4. Step 4: Simplify right side
    449,874x = 154,381,099,824
  5. Step 5: Solve for x
    x = 154,381,099,824/449,874
  6. Step 6: Final answer
    x = 343,165.20

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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.