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Finding the Fourth Proportional to 299,391.87, 448,956.05 and 112,272.15

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Solution

The fourth proportional to 299,391.87, 448,956.05 and 112,272.15 is: 168,358.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,391.87 : 448,956.05 = 112,272.15 : x
  2. Step 2: Convert to fraction form
    299,391.87/448,956.05 = 112,272.15/x
  3. Step 3: Cross multiply
    299,391.87x = 448,956.05 × 112,272.15
  4. Step 4: Simplify right side
    299,391.87x = 50,405,260,427.65
  5. Step 5: Solve for x
    x = 50,405,260,427.65/299,391.87
  6. Step 6: Final answer
    x = 168,358.81

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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.