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Finding the Fourth Proportional to 465,853.73, 642,863.25 and 261,913.28

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Solution

The fourth proportional to 465,853.73, 642,863.25 and 261,913.28 is: 361,431.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,853.73 : 642,863.25 = 261,913.28 : x
  2. Step 2: Convert to fraction form
    465,853.73/642,863.25 = 261,913.28/x
  3. Step 3: Cross multiply
    465,853.73x = 642,863.25 × 261,913.28
  4. Step 4: Simplify right side
    465,853.73x = 168,374,419,184.64
  5. Step 5: Solve for x
    x = 168,374,419,184.64/465,853.73
  6. Step 6: Final answer
    x = 361,431.95

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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.