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Finding the Fourth Proportional to 291,231.02, 436,846.35 and 80,868.90

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Solution

The fourth proportional to 291,231.02, 436,846.35 and 80,868.90 is: 121,303.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,231.02 : 436,846.35 = 80,868.90 : x
  2. Step 2: Convert to fraction form
    291,231.02/436,846.35 = 80,868.90/x
  3. Step 3: Cross multiply
    291,231.02x = 436,846.35 × 80,868.90
  4. Step 4: Simplify right side
    291,231.02x = 35,327,283,793.52
  5. Step 5: Solve for x
    x = 35,327,283,793.52/291,231.02
  6. Step 6: Final answer
    x = 121,303.30

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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.