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Finding the Fourth Proportional to 221,589.72, 305,794.17 and 126,097.20

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Solution

The fourth proportional to 221,589.72, 305,794.17 and 126,097.20 is: 174,014.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,589.72 : 305,794.17 = 126,097.20 : x
  2. Step 2: Convert to fraction form
    221,589.72/305,794.17 = 126,097.20/x
  3. Step 3: Cross multiply
    221,589.72x = 305,794.17 × 126,097.20
  4. Step 4: Simplify right side
    221,589.72x = 38,559,788,613.32
  5. Step 5: Solve for x
    x = 38,559,788,613.32/221,589.72
  6. Step 6: Final answer
    x = 174,014.34

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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.