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Finding the Fourth Proportional to 220,435.70, 304,181.79 and 122,321.40

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Solution

The fourth proportional to 220,435.70, 304,181.79 and 122,321.40 is: 168,792.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,435.70 : 304,181.79 = 122,321.40 : x
  2. Step 2: Convert to fraction form
    220,435.70/304,181.79 = 122,321.40/x
  3. Step 3: Cross multiply
    220,435.70x = 304,181.79 × 122,321.40
  4. Step 4: Simplify right side
    220,435.70x = 37,207,942,407.31
  5. Step 5: Solve for x
    x = 37,207,942,407.31/220,435.70
  6. Step 6: Final answer
    x = 168,792.73

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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.