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Finding the Fourth Proportional to 206,283.02, 309,245.64 and 79,836.23

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Solution

The fourth proportional to 206,283.02, 309,245.64 and 79,836.23 is: 119,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,283.02 : 309,245.64 = 79,836.23 : x
  2. Step 2: Convert to fraction form
    206,283.02/309,245.64 = 79,836.23/x
  3. Step 3: Cross multiply
    206,283.02x = 309,245.64 × 79,836.23
  4. Step 4: Simplify right side
    206,283.02x = 24,689,004,495.31
  5. Step 5: Solve for x
    x = 24,689,004,495.31/206,283.02
  6. Step 6: Final answer
    x = 119,685.10

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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.