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Finding the Fourth Proportional to 226,717.53, 312,872.81 and 129,919.47

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Solution

The fourth proportional to 226,717.53, 312,872.81 and 129,919.47 is: 179,290.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,717.53 : 312,872.81 = 129,919.47 : x
  2. Step 2: Convert to fraction form
    226,717.53/312,872.81 = 129,919.47/x
  3. Step 3: Cross multiply
    226,717.53x = 312,872.81 × 129,919.47
  4. Step 4: Simplify right side
    226,717.53x = 40,648,269,652.61
  5. Step 5: Solve for x
    x = 40,648,269,652.61/226,717.53
  6. Step 6: Final answer
    x = 179,290.37

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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.