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Finding the Fourth Proportional to 449,952.72, 621,057.96 and 280,086

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Solution

The fourth proportional to 449,952.72, 621,057.96 and 280,086 is: 386,595.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,952.72 : 621,057.96 = 280,086 : x
  2. Step 2: Convert to fraction form
    449,952.72/621,057.96 = 280,086/x
  3. Step 3: Cross multiply
    449,952.72x = 621,057.96 × 280,086
  4. Step 4: Simplify right side
    449,952.72x = 173,949,639,784.56
  5. Step 5: Solve for x
    x = 173,949,639,784.56/449,952.72
  6. Step 6: Final answer
    x = 386,595.37

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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.