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Finding the Fourth Proportional to 221,677.59, 305,915.43 and 126,184.30

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Solution

The fourth proportional to 221,677.59, 305,915.43 and 126,184.30 is: 174,134.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,677.59 : 305,915.43 = 126,184.30 : x
  2. Step 2: Convert to fraction form
    221,677.59/305,915.43 = 126,184.30/x
  3. Step 3: Cross multiply
    221,677.59x = 305,915.43 × 126,184.30
  4. Step 4: Simplify right side
    221,677.59x = 38,601,724,102.15
  5. Step 5: Solve for x
    x = 38,601,724,102.15/221,677.59
  6. Step 6: Final answer
    x = 174,134.53

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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.