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Finding the Fourth Proportional to 353,447.08, 487,753 and 210,209.52

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Solution

The fourth proportional to 353,447.08, 487,753 and 210,209.52 is: 290,086.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,447.08 : 487,753 = 210,209.52 : x
  2. Step 2: Convert to fraction form
    353,447.08/487,753 = 210,209.52/x
  3. Step 3: Cross multiply
    353,447.08x = 487,753 × 210,209.52
  4. Step 4: Simplify right side
    353,447.08x = 102,530,324,008.56
  5. Step 5: Solve for x
    x = 102,530,324,008.56/353,447.08
  6. Step 6: Final answer
    x = 290,086.78

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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.