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Finding the Fourth Proportional to 256,608.40, 385,131.30 and 114,672.10

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Solution

The fourth proportional to 256,608.40, 385,131.30 and 114,672.10 is: 172,105.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,608.40 : 385,131.30 = 114,672.10 : x
  2. Step 2: Convert to fraction form
    256,608.40/385,131.30 = 114,672.10/x
  3. Step 3: Cross multiply
    256,608.40x = 385,131.30 × 114,672.10
  4. Step 4: Simplify right side
    256,608.40x = 44,163,814,946.73
  5. Step 5: Solve for x
    x = 44,163,814,946.73/256,608.40
  6. Step 6: Final answer
    x = 172,105.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.