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Finding the Fourth Proportional to 355,561.80, 490,675.74 and 202,593.30

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Solution

The fourth proportional to 355,561.80, 490,675.74 and 202,593.30 is: 279,579.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,561.80 : 490,675.74 = 202,593.30 : x
  2. Step 2: Convert to fraction form
    355,561.80/490,675.74 = 202,593.30/x
  3. Step 3: Cross multiply
    355,561.80x = 490,675.74 × 202,593.30
  4. Step 4: Simplify right side
    355,561.80x = 99,407,617,396.54
  5. Step 5: Solve for x
    x = 99,407,617,396.54/355,561.80
  6. Step 6: Final answer
    x = 279,579.01

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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.