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Finding the Fourth Proportional to 206,330.21, 309,496.34 and 93,931.79

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Solution

The fourth proportional to 206,330.21, 309,496.34 and 93,931.79 is: 140,898.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,330.21 : 309,496.34 = 93,931.79 : x
  2. Step 2: Convert to fraction form
    206,330.21/309,496.34 = 93,931.79/x
  3. Step 3: Cross multiply
    206,330.21x = 309,496.34 × 93,931.79
  4. Step 4: Simplify right side
    206,330.21x = 29,071,544,744.99
  5. Step 5: Solve for x
    x = 29,071,544,744.99/206,330.21
  6. Step 6: Final answer
    x = 140,898.15

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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.