Home / 291,217.02-436,825.35-80,854.90

Finding the Fourth Proportional to 291,217.02, 436,825.35 and 80,854.90

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Solution

The fourth proportional to 291,217.02, 436,825.35 and 80,854.90 is: 121,282.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,217.02 : 436,825.35 = 80,854.90 : x
  2. Step 2: Convert to fraction form
    291,217.02/436,825.35 = 80,854.90/x
  3. Step 3: Cross multiply
    291,217.02x = 436,825.35 × 80,854.90
  4. Step 4: Simplify right side
    291,217.02x = 35,319,469,991.72
  5. Step 5: Solve for x
    x = 35,319,469,991.72/291,217.02
  6. Step 6: Final answer
    x = 121,282.30

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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.