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Finding the Fourth Proportional to 251,112.89, 376,728.57 and 82,646.46

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Solution

The fourth proportional to 251,112.89, 376,728.57 and 82,646.46 is: 123,989.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,112.89 : 376,728.57 = 82,646.46 : x
  2. Step 2: Convert to fraction form
    251,112.89/376,728.57 = 82,646.46/x
  3. Step 3: Cross multiply
    251,112.89x = 376,728.57 × 82,646.46
  4. Step 4: Simplify right side
    251,112.89x = 31,135,282,691.36
  5. Step 5: Solve for x
    x = 31,135,282,691.36/251,112.89
  6. Step 6: Final answer
    x = 123,989.18

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1.5x scale

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.