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Finding the Fourth Proportional to 206,188.72, 309,332.28 and 73,080.60

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Solution

The fourth proportional to 206,188.72, 309,332.28 and 73,080.60 is: 109,638.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,188.72 : 309,332.28 = 73,080.60 : x
  2. Step 2: Convert to fraction form
    206,188.72/309,332.28 = 73,080.60/x
  3. Step 3: Cross multiply
    206,188.72x = 309,332.28 × 73,080.60
  4. Step 4: Simplify right side
    206,188.72x = 22,606,188,621.77
  5. Step 5: Solve for x
    x = 22,606,188,621.77/206,188.72
  6. Step 6: Final answer
    x = 109,638.34

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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.