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Finding the Fourth Proportional to 449,880, 620,835.48 and 248,676

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Solution

The fourth proportional to 449,880, 620,835.48 and 248,676 is: 343,173.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,880 : 620,835.48 = 248,676 : x
  2. Step 2: Convert to fraction form
    449,880/620,835.48 = 248,676/x
  3. Step 3: Cross multiply
    449,880x = 620,835.48 × 248,676
  4. Step 4: Simplify right side
    449,880x = 154,386,883,824.48
  5. Step 5: Solve for x
    x = 154,386,883,824.48/449,880
  6. Step 6: Final answer
    x = 343,173.48

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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.