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Finding the Fourth Proportional to 341,939.58, 512,450.85 and 266,129.67

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Solution

The fourth proportional to 341,939.58, 512,450.85 and 266,129.67 is: 398,837.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,939.58 : 512,450.85 = 266,129.67 : x
  2. Step 2: Convert to fraction form
    341,939.58/512,450.85 = 266,129.67/x
  3. Step 3: Cross multiply
    341,939.58x = 512,450.85 × 266,129.67
  4. Step 4: Simplify right side
    341,939.58x = 136,378,375,601.72
  5. Step 5: Solve for x
    x = 136,378,375,601.72/341,939.58
  6. Step 6: Final answer
    x = 398,837.64

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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.