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Finding the Fourth Proportional to 206,074.20, 308,963.70 and 79,606.20

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Solution

The fourth proportional to 206,074.20, 308,963.70 and 79,606.20 is: 119,352.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,074.20 : 308,963.70 = 79,606.20 : x
  2. Step 2: Convert to fraction form
    206,074.20/308,963.70 = 79,606.20/x
  3. Step 3: Cross multiply
    206,074.20x = 308,963.70 × 79,606.20
  4. Step 4: Simplify right side
    206,074.20x = 24,595,426,094.94
  5. Step 5: Solve for x
    x = 24,595,426,094.94/206,074.20
  6. Step 6: Final answer
    x = 119,352.28

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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.