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Finding the Fourth Proportional to 355,294.90, 490,334.91 and 202,339.56

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Solution

The fourth proportional to 355,294.90, 490,334.91 and 202,339.56 is: 279,244.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,294.90 : 490,334.91 = 202,339.56 : x
  2. Step 2: Convert to fraction form
    355,294.90/490,334.91 = 202,339.56/x
  3. Step 3: Cross multiply
    355,294.90x = 490,334.91 × 202,339.56
  4. Step 4: Simplify right side
    355,294.90x = 99,214,149,942.04
  5. Step 5: Solve for x
    x = 99,214,149,942.04/355,294.90
  6. Step 6: Final answer
    x = 279,244.51

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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.