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Finding the Fourth Proportional to 206,906.10, 310,359.15 and 73,790.70

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Solution

The fourth proportional to 206,906.10, 310,359.15 and 73,790.70 is: 110,686.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,906.10 : 310,359.15 = 73,790.70 : x
  2. Step 2: Convert to fraction form
    206,906.10/310,359.15 = 73,790.70/x
  3. Step 3: Cross multiply
    206,906.10x = 310,359.15 × 73,790.70
  4. Step 4: Simplify right side
    206,906.10x = 22,901,618,929.91
  5. Step 5: Solve for x
    x = 22,901,618,929.91/206,906.10
  6. Step 6: Final answer
    x = 110,686.05

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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.