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Finding the Fourth Proportional to 449,408.32, 620,179.68 and 248,200

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Solution

The fourth proportional to 449,408.32, 620,179.68 and 248,200 is: 342,513.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,408.32 : 620,179.68 = 248,200 : x
  2. Step 2: Convert to fraction form
    449,408.32/620,179.68 = 248,200/x
  3. Step 3: Cross multiply
    449,408.32x = 620,179.68 × 248,200
  4. Step 4: Simplify right side
    449,408.32x = 153,928,596,576
  5. Step 5: Solve for x
    x = 153,928,596,576/449,408.32
  6. Step 6: Final answer
    x = 342,513.90

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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.