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Finding the Fourth Proportional to 355,613.83, 490,755.61 and 202,648.75

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Solution

The fourth proportional to 355,613.83, 490,755.61 and 202,648.75 is: 279,660.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,613.83 : 490,755.61 = 202,648.75 : x
  2. Step 2: Convert to fraction form
    355,613.83/490,755.61 = 202,648.75/x
  3. Step 3: Cross multiply
    355,613.83x = 490,755.61 × 202,648.75
  4. Step 4: Simplify right side
    355,613.83x = 99,451,010,921.99
  5. Step 5: Solve for x
    x = 99,451,010,921.99/355,613.83
  6. Step 6: Final answer
    x = 279,660.13

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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.