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Finding the Fourth Proportional to 449,214.34, 619,103.87 and 372,328.54

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Solution

The fourth proportional to 449,214.34, 619,103.87 and 372,328.54 is: 513,140.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,214.34 : 619,103.87 = 372,328.54 : x
  2. Step 2: Convert to fraction form
    449,214.34/619,103.87 = 372,328.54/x
  3. Step 3: Cross multiply
    449,214.34x = 619,103.87 × 372,328.54
  4. Step 4: Simplify right side
    449,214.34x = 230,510,040,025.45
  5. Step 5: Solve for x
    x = 230,510,040,025.45/449,214.34
  6. Step 6: Final answer
    x = 513,140.43

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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.