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Finding the Fourth Proportional to 449,688.96, 620,546.40 and 248,472

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Solution

The fourth proportional to 449,688.96, 620,546.40 and 248,472 is: 342,877.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,688.96 : 620,546.40 = 248,472 : x
  2. Step 2: Convert to fraction form
    449,688.96/620,546.40 = 248,472/x
  3. Step 3: Cross multiply
    449,688.96x = 620,546.40 × 248,472
  4. Step 4: Simplify right side
    449,688.96x = 154,188,405,100.80
  5. Step 5: Solve for x
    x = 154,188,405,100.80/449,688.96
  6. Step 6: Final answer
    x = 342,877.90

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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.