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Finding the Fourth Proportional to 221,935.68, 306,292.32 and 121,348.80

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Solution

The fourth proportional to 221,935.68, 306,292.32 and 121,348.80 is: 167,472.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,935.68 : 306,292.32 = 121,348.80 : x
  2. Step 2: Convert to fraction form
    221,935.68/306,292.32 = 121,348.80/x
  3. Step 3: Cross multiply
    221,935.68x = 306,292.32 × 121,348.80
  4. Step 4: Simplify right side
    221,935.68x = 37,168,205,481.22
  5. Step 5: Solve for x
    x = 37,168,205,481.22/221,935.68
  6. Step 6: Final answer
    x = 167,472.87

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.