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Finding the Fourth Proportional to 251,434.53, 377,388.74 and 91,664.94

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Solution

The fourth proportional to 251,434.53, 377,388.74 and 91,664.94 is: 137,583.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,434.53 : 377,388.74 = 91,664.94 : x
  2. Step 2: Convert to fraction form
    251,434.53/377,388.74 = 91,664.94/x
  3. Step 3: Cross multiply
    251,434.53x = 377,388.74 × 91,664.94
  4. Step 4: Simplify right side
    251,434.53x = 34,593,315,750.45
  5. Step 5: Solve for x
    x = 34,593,315,750.45/251,434.53
  6. Step 6: Final answer
    x = 137,583.79

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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.