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Finding the Fourth Proportional to 291,220.60, 436,830.90 and 231,734.20

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Solution

The fourth proportional to 291,220.60, 436,830.90 and 231,734.20 is: 347,601.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,220.60 : 436,830.90 = 231,734.20 : x
  2. Step 2: Convert to fraction form
    291,220.60/436,830.90 = 231,734.20/x
  3. Step 3: Cross multiply
    291,220.60x = 436,830.90 × 231,734.20
  4. Step 4: Simplify right side
    291,220.60x = 101,228,659,146.78
  5. Step 5: Solve for x
    x = 101,228,659,146.78/291,220.60
  6. Step 6: Final answer
    x = 347,601.30

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1.5x scale

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.