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Finding the Fourth Proportional to 291,661.80, 436,617.90 and 173,272.20

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Solution

The fourth proportional to 291,661.80, 436,617.90 and 173,272.20 is: 259,388.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,661.80 : 436,617.90 = 173,272.20 : x
  2. Step 2: Convert to fraction form
    291,661.80/436,617.90 = 173,272.20/x
  3. Step 3: Cross multiply
    291,661.80x = 436,617.90 × 173,272.20
  4. Step 4: Simplify right side
    291,661.80x = 75,653,744,092.38
  5. Step 5: Solve for x
    x = 75,653,744,092.38/291,661.80
  6. Step 6: Final answer
    x = 259,388.59

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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.