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Finding the Fourth Proportional to 449,021.05, 619,633.62 and 267,639.47

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Solution

The fourth proportional to 449,021.05, 619,633.62 and 267,639.47 is: 369,333.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,021.05 : 619,633.62 = 267,639.47 : x
  2. Step 2: Convert to fraction form
    449,021.05/619,633.62 = 267,639.47/x
  3. Step 3: Cross multiply
    449,021.05x = 619,633.62 × 267,639.47
  4. Step 4: Simplify right side
    449,021.05x = 165,838,413,650.98
  5. Step 5: Solve for x
    x = 165,838,413,650.98/449,021.05
  6. Step 6: Final answer
    x = 369,333.27

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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.