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Finding the Fourth Proportional to 355,196.77, 490,171.37 and 202,227.05

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Solution

The fourth proportional to 355,196.77, 490,171.37 and 202,227.05 is: 279,073.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,196.77 : 490,171.37 = 202,227.05 : x
  2. Step 2: Convert to fraction form
    355,196.77/490,171.37 = 202,227.05/x
  3. Step 3: Cross multiply
    355,196.77x = 490,171.37 × 202,227.05
  4. Step 4: Simplify right side
    355,196.77x = 99,125,910,363.85
  5. Step 5: Solve for x
    x = 99,125,910,363.85/355,196.77
  6. Step 6: Final answer
    x = 279,073.23

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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.