Home / 221,845.32-306,146.54-121,243.32

Finding the Fourth Proportional to 221,845.32, 306,146.54 and 121,243.32

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Solution

The fourth proportional to 221,845.32, 306,146.54 and 121,243.32 is: 167,315.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,845.32 : 306,146.54 = 121,243.32 : x
  2. Step 2: Convert to fraction form
    221,845.32/306,146.54 = 121,243.32/x
  3. Step 3: Cross multiply
    221,845.32x = 306,146.54 × 121,243.32
  4. Step 4: Simplify right side
    221,845.32x = 37,118,222,309.90
  5. Step 5: Solve for x
    x = 37,118,222,309.90/221,845.32
  6. Step 6: Final answer
    x = 167,315.78

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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.