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Finding the Fourth Proportional to 253,706.21, 350,099.54 and 138,961.97

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Solution

The fourth proportional to 253,706.21, 350,099.54 and 138,961.97 is: 191,759.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,706.21 : 350,099.54 = 138,961.97 : x
  2. Step 2: Convert to fraction form
    253,706.21/350,099.54 = 138,961.97/x
  3. Step 3: Cross multiply
    253,706.21x = 350,099.54 × 138,961.97
  4. Step 4: Simplify right side
    253,706.21x = 48,650,520,024.00
  5. Step 5: Solve for x
    x = 48,650,520,024.00/253,706.21
  6. Step 6: Final answer
    x = 191,759.28

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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.