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Finding the Fourth Proportional to 361,998.20, 499,630.20 and 209,061.29

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Solution

The fourth proportional to 361,998.20, 499,630.20 and 209,061.29 is: 288,546.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,998.20 : 499,630.20 = 209,061.29 : x
  2. Step 2: Convert to fraction form
    361,998.20/499,630.20 = 209,061.29/x
  3. Step 3: Cross multiply
    361,998.20x = 499,630.20 × 209,061.29
  4. Step 4: Simplify right side
    361,998.20x = 104,453,334,134.96
  5. Step 5: Solve for x
    x = 104,453,334,134.96/361,998.20
  6. Step 6: Final answer
    x = 288,546.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.