Home / 291,218.02-436,826.85-80,855.90

Finding the Fourth Proportional to 291,218.02, 436,826.85 and 80,855.90

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Solution

The fourth proportional to 291,218.02, 436,826.85 and 80,855.90 is: 121,283.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,218.02 : 436,826.85 = 80,855.90 : x
  2. Step 2: Convert to fraction form
    291,218.02/436,826.85 = 80,855.90/x
  3. Step 3: Cross multiply
    291,218.02x = 436,826.85 × 80,855.90
  4. Step 4: Simplify right side
    291,218.02x = 35,320,028,100.92
  5. Step 5: Solve for x
    x = 35,320,028,100.92/291,218.02
  6. Step 6: Final answer
    x = 121,283.80

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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.