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Finding the Fourth Proportional to 355,938.80, 533,908.20 and 206,121.20

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Solution

The fourth proportional to 355,938.80, 533,908.20 and 206,121.20 is: 309,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,938.80 : 533,908.20 = 206,121.20 : x
  2. Step 2: Convert to fraction form
    355,938.80/533,908.20 = 206,121.20/x
  3. Step 3: Cross multiply
    355,938.80x = 533,908.20 × 206,121.20
  4. Step 4: Simplify right side
    355,938.80x = 110,049,798,873.84
  5. Step 5: Solve for x
    x = 110,049,798,873.84/355,938.80
  6. Step 6: Final answer
    x = 309,181.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.