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Finding the Fourth Proportional to 220,192.62, 303,866.38 and 129,552

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Solution

The fourth proportional to 220,192.62, 303,866.38 and 129,552 is: 178,782.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,192.62 : 303,866.38 = 129,552 : x
  2. Step 2: Convert to fraction form
    220,192.62/303,866.38 = 129,552/x
  3. Step 3: Cross multiply
    220,192.62x = 303,866.38 × 129,552
  4. Step 4: Simplify right side
    220,192.62x = 39,366,497,261.76
  5. Step 5: Solve for x
    x = 39,366,497,261.76/220,192.62
  6. Step 6: Final answer
    x = 178,782.09

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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.