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Finding the Fourth Proportional to 447,638.82, 617,645.79 and 266,315.31

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Solution

The fourth proportional to 447,638.82, 617,645.79 and 266,315.31 is: 367,458.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,638.82 : 617,645.79 = 266,315.31 : x
  2. Step 2: Convert to fraction form
    447,638.82/617,645.79 = 266,315.31/x
  3. Step 3: Cross multiply
    447,638.82x = 617,645.79 × 266,315.31
  4. Step 4: Simplify right side
    447,638.82x = 164,488,530,034.05
  5. Step 5: Solve for x
    x = 164,488,530,034.05/447,638.82
  6. Step 6: Final answer
    x = 367,458.15

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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.