Home / 660,667.14-991,148.33-211,414.97

Finding the Fourth Proportional to 660,667.14, 991,148.33 and 211,414.97

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Solution

The fourth proportional to 660,667.14, 991,148.33 and 211,414.97 is: 317,169.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,667.14 : 991,148.33 = 211,414.97 : x
  2. Step 2: Convert to fraction form
    660,667.14/991,148.33 = 211,414.97/x
  3. Step 3: Cross multiply
    660,667.14x = 991,148.33 × 211,414.97
  4. Step 4: Simplify right side
    660,667.14x = 209,543,591,883.70
  5. Step 5: Solve for x
    x = 209,543,591,883.70/660,667.14
  6. Step 6: Final answer
    x = 317,169.69

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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.