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Finding the Fourth Proportional to 221,944, 306,290.28 and 121,348.48

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Solution

The fourth proportional to 221,944, 306,290.28 and 121,348.48 is: 167,465.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,944 : 306,290.28 = 121,348.48 : x
  2. Step 2: Convert to fraction form
    221,944/306,290.28 = 121,348.48/x
  3. Step 3: Cross multiply
    221,944x = 306,290.28 × 121,348.48
  4. Step 4: Simplify right side
    221,944x = 37,167,859,916.77
  5. Step 5: Solve for x
    x = 37,167,859,916.77/221,944
  6. Step 6: Final answer
    x = 167,465.04

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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.