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Finding the Fourth Proportional to 220,467.20, 304,243.50 and 122,349.50

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Solution

The fourth proportional to 220,467.20, 304,243.50 and 122,349.50 is: 168,841.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,467.20 : 304,243.50 = 122,349.50 : x
  2. Step 2: Convert to fraction form
    220,467.20/304,243.50 = 122,349.50/x
  3. Step 3: Cross multiply
    220,467.20x = 304,243.50 × 122,349.50
  4. Step 4: Simplify right side
    220,467.20x = 37,224,040,103.25
  5. Step 5: Solve for x
    x = 37,224,040,103.25/220,467.20
  6. Step 6: Final answer
    x = 168,841.62

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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.