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Finding the Fourth Proportional to 449,701.96, 620,564.34 and 248,485

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Solution

The fourth proportional to 449,701.96, 620,564.34 and 248,485 is: 342,895.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,701.96 : 620,564.34 = 248,485 : x
  2. Step 2: Convert to fraction form
    449,701.96/620,564.34 = 248,485/x
  3. Step 3: Cross multiply
    449,701.96x = 620,564.34 × 248,485
  4. Step 4: Simplify right side
    449,701.96x = 154,200,930,024.90
  5. Step 5: Solve for x
    x = 154,200,930,024.90/449,701.96
  6. Step 6: Final answer
    x = 342,895.84

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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.