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Finding the Fourth Proportional to 325,648.54, 449,004.11 and 280,248.47

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Solution

The fourth proportional to 325,648.54, 449,004.11 and 280,248.47 is: 386,406.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,648.54 : 449,004.11 = 280,248.47 : x
  2. Step 2: Convert to fraction form
    325,648.54/449,004.11 = 280,248.47/x
  3. Step 3: Cross multiply
    325,648.54x = 449,004.11 × 280,248.47
  4. Step 4: Simplify right side
    325,648.54x = 125,832,711,204.95
  5. Step 5: Solve for x
    x = 125,832,711,204.95/325,648.54
  6. Step 6: Final answer
    x = 386,406.50

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1.5x scale

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.