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Finding the Fourth Proportional to 281,411.70, 422,117.55 and 262,979.70

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Solution

The fourth proportional to 281,411.70, 422,117.55 and 262,979.70 is: 394,469.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,411.70 : 422,117.55 = 262,979.70 : x
  2. Step 2: Convert to fraction form
    281,411.70/422,117.55 = 262,979.70/x
  3. Step 3: Cross multiply
    281,411.70x = 422,117.55 × 262,979.70
  4. Step 4: Simplify right side
    281,411.70x = 111,008,346,663.74
  5. Step 5: Solve for x
    x = 111,008,346,663.74/281,411.70
  6. Step 6: Final answer
    x = 394,469.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.