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Finding the Fourth Proportional to 221,240.73, 305,312.17 and 120,638.73

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Solution

The fourth proportional to 221,240.73, 305,312.17 and 120,638.73 is: 166,481.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,240.73 : 305,312.17 = 120,638.73 : x
  2. Step 2: Convert to fraction form
    221,240.73/305,312.17 = 120,638.73/x
  3. Step 3: Cross multiply
    221,240.73x = 305,312.17 × 120,638.73
  4. Step 4: Simplify right side
    221,240.73x = 36,832,472,442.34
  5. Step 5: Solve for x
    x = 36,832,472,442.34/221,240.73
  6. Step 6: Final answer
    x = 166,481.43

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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.