Home / 221,825.36-306,266.80-131,210.43

Finding the Fourth Proportional to 221,825.36, 306,266.80 and 131,210.43

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Solution

The fourth proportional to 221,825.36, 306,266.80 and 131,210.43 is: 181,157.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,825.36 : 306,266.80 = 131,210.43 : x
  2. Step 2: Convert to fraction form
    221,825.36/306,266.80 = 131,210.43/x
  3. Step 3: Cross multiply
    221,825.36x = 306,266.80 × 131,210.43
  4. Step 4: Simplify right side
    221,825.36x = 40,185,398,645.94
  5. Step 5: Solve for x
    x = 40,185,398,645.94/221,825.36
  6. Step 6: Final answer
    x = 181,157.82

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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.