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Finding the Fourth Proportional to 221,695.59, 305,940.18 and 126,202.20

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Solution

The fourth proportional to 221,695.59, 305,940.18 and 126,202.20 is: 174,159.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,695.59 : 305,940.18 = 126,202.20 : x
  2. Step 2: Convert to fraction form
    221,695.59/305,940.18 = 126,202.20/x
  3. Step 3: Cross multiply
    221,695.59x = 305,940.18 × 126,202.20
  4. Step 4: Simplify right side
    221,695.59x = 38,610,323,784.40
  5. Step 5: Solve for x
    x = 38,610,323,784.40/221,695.59
  6. Step 6: Final answer
    x = 174,159.19

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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.