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Finding the Fourth Proportional to 325,648.79, 449,004.45 and 280,248.72

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Solution

The fourth proportional to 325,648.79, 449,004.45 and 280,248.72 is: 386,406.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,648.79 : 449,004.45 = 280,248.72 : x
  2. Step 2: Convert to fraction form
    325,648.79/449,004.45 = 280,248.72/x
  3. Step 3: Cross multiply
    325,648.79x = 449,004.45 × 280,248.72
  4. Step 4: Simplify right side
    325,648.79x = 125,832,922,386.80
  5. Step 5: Solve for x
    x = 125,832,922,386.80/325,648.79
  6. Step 6: Final answer
    x = 386,406.85

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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.