Home / 221,016.56-305,028.13-122,909.59

Finding the Fourth Proportional to 221,016.56, 305,028.13 and 122,909.59

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Solution

The fourth proportional to 221,016.56, 305,028.13 and 122,909.59 is: 169,629.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,016.56 : 305,028.13 = 122,909.59 : x
  2. Step 2: Convert to fraction form
    221,016.56/305,028.13 = 122,909.59/x
  3. Step 3: Cross multiply
    221,016.56x = 305,028.13 × 122,909.59
  4. Step 4: Simplify right side
    221,016.56x = 37,490,882,396.77
  5. Step 5: Solve for x
    x = 37,490,882,396.77/221,016.56
  6. Step 6: Final answer
    x = 169,629.29

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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.