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Finding the Fourth Proportional to 203,910.80, 305,866.20 and 174,386.30

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Solution

The fourth proportional to 203,910.80, 305,866.20 and 174,386.30 is: 261,579.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,910.80 : 305,866.20 = 174,386.30 : x
  2. Step 2: Convert to fraction form
    203,910.80/305,866.20 = 174,386.30/x
  3. Step 3: Cross multiply
    203,910.80x = 305,866.20 × 174,386.30
  4. Step 4: Simplify right side
    203,910.80x = 53,338,874,913.06
  5. Step 5: Solve for x
    x = 53,338,874,913.06/203,910.80
  6. Step 6: Final answer
    x = 261,579.45

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.