Home / 291,279.90-436,919.85-172,890.30

Finding the Fourth Proportional to 291,279.90, 436,919.85 and 172,890.30

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Solution

The fourth proportional to 291,279.90, 436,919.85 and 172,890.30 is: 259,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,279.90 : 436,919.85 = 172,890.30 : x
  2. Step 2: Convert to fraction form
    291,279.90/436,919.85 = 172,890.30/x
  3. Step 3: Cross multiply
    291,279.90x = 436,919.85 × 172,890.30
  4. Step 4: Simplify right side
    291,279.90x = 75,539,203,942.46
  5. Step 5: Solve for x
    x = 75,539,203,942.46/291,279.90
  6. Step 6: Final answer
    x = 259,335.45

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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.