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Finding the Fourth Proportional to 355,645.08, 490,823.55 and 202,691.16

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Solution

The fourth proportional to 355,645.08, 490,823.55 and 202,691.16 is: 279,732.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,645.08 : 490,823.55 = 202,691.16 : x
  2. Step 2: Convert to fraction form
    355,645.08/490,823.55 = 202,691.16/x
  3. Step 3: Cross multiply
    355,645.08x = 490,823.55 × 202,691.16
  4. Step 4: Simplify right side
    355,645.08x = 99,485,594,704.82
  5. Step 5: Solve for x
    x = 99,485,594,704.82/355,645.08
  6. Step 6: Final answer
    x = 279,732.80

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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.