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Finding the Fourth Proportional to 355,296.90, 490,337.68 and 202,341.56

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Solution

The fourth proportional to 355,296.90, 490,337.68 and 202,341.56 is: 279,247.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,296.90 : 490,337.68 = 202,341.56 : x
  2. Step 2: Convert to fraction form
    355,296.90/490,337.68 = 202,341.56/x
  3. Step 3: Cross multiply
    355,296.90x = 490,337.68 × 202,341.56
  4. Step 4: Simplify right side
    355,296.90x = 99,215,691,097.98
  5. Step 5: Solve for x
    x = 99,215,691,097.98/355,296.90
  6. Step 6: Final answer
    x = 279,247.27

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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.