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Finding the Fourth Proportional to 206,321.78, 309,421.01 and 62,221.57

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Solution

The fourth proportional to 206,321.78, 309,421.01 and 62,221.57 is: 93,313.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,321.78 : 309,421.01 = 62,221.57 : x
  2. Step 2: Convert to fraction form
    206,321.78/309,421.01 = 62,221.57/x
  3. Step 3: Cross multiply
    206,321.78x = 309,421.01 × 62,221.57
  4. Step 4: Simplify right side
    206,321.78x = 19,252,660,415.19
  5. Step 5: Solve for x
    x = 19,252,660,415.19/206,321.78
  6. Step 6: Final answer
    x = 93,313.76

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1.5x scale

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.