Home / 306,523.24-422,863.14-221,505.64

Finding the Fourth Proportional to 306,523.24, 422,863.14 and 221,505.64

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Solution

The fourth proportional to 306,523.24, 422,863.14 and 221,505.64 is: 305,577.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,523.24 : 422,863.14 = 221,505.64 : x
  2. Step 2: Convert to fraction form
    306,523.24/422,863.14 = 221,505.64/x
  3. Step 3: Cross multiply
    306,523.24x = 422,863.14 × 221,505.64
  4. Step 4: Simplify right side
    306,523.24x = 93,666,570,458.11
  5. Step 5: Solve for x
    x = 93,666,570,458.11/306,523.24
  6. Step 6: Final answer
    x = 305,577.39

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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.