Home / 221,919.52-306,248.94-121,317.52

Finding the Fourth Proportional to 221,919.52, 306,248.94 and 121,317.52

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Solution

The fourth proportional to 221,919.52, 306,248.94 and 121,317.52 is: 167,418.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,919.52 : 306,248.94 = 121,317.52 : x
  2. Step 2: Convert to fraction form
    221,919.52/306,248.94 = 121,317.52/x
  3. Step 3: Cross multiply
    221,919.52x = 306,248.94 × 121,317.52
  4. Step 4: Simplify right side
    221,919.52x = 37,153,361,903.43
  5. Step 5: Solve for x
    x = 37,153,361,903.43/221,919.52
  6. Step 6: Final answer
    x = 167,418.18

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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.