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Finding the Fourth Proportional to 291,234.02, 436,850.85 and 80,871.90

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Solution

The fourth proportional to 291,234.02, 436,850.85 and 80,871.90 is: 121,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,234.02 : 436,850.85 = 80,871.90 : x
  2. Step 2: Convert to fraction form
    291,234.02/436,850.85 = 80,871.90/x
  3. Step 3: Cross multiply
    291,234.02x = 436,850.85 × 80,871.90
  4. Step 4: Simplify right side
    291,234.02x = 35,328,958,256.12
  5. Step 5: Solve for x
    x = 35,328,958,256.12/291,234.02
  6. Step 6: Final answer
    x = 121,307.80

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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.