Home / 305,982.90-422,187.39-185,121.18

Finding the Fourth Proportional to 305,982.90, 422,187.39 and 185,121.18

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Solution

The fourth proportional to 305,982.90, 422,187.39 and 185,121.18 is: 255,425.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,982.90 : 422,187.39 = 185,121.18 : x
  2. Step 2: Convert to fraction form
    305,982.90/422,187.39 = 185,121.18/x
  3. Step 3: Cross multiply
    305,982.90x = 422,187.39 × 185,121.18
  4. Step 4: Simplify right side
    305,982.90x = 78,155,827,817.92
  5. Step 5: Solve for x
    x = 78,155,827,817.92/305,982.90
  6. Step 6: Final answer
    x = 255,425.48

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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.