Home / 306,139.27-422,506.36-185,347.12

Finding the Fourth Proportional to 306,139.27, 422,506.36 and 185,347.12

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Solution

The fourth proportional to 306,139.27, 422,506.36 and 185,347.12 is: 255,799.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,139.27 : 422,506.36 = 185,347.12 : x
  2. Step 2: Convert to fraction form
    306,139.27/422,506.36 = 185,347.12/x
  3. Step 3: Cross multiply
    306,139.27x = 422,506.36 × 185,347.12
  4. Step 4: Simplify right side
    306,139.27x = 78,310,336,414.79
  5. Step 5: Solve for x
    x = 78,310,336,414.79/306,139.27
  6. Step 6: Final answer
    x = 255,799.71

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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.