Home / 291,219.02-436,828.35-80,856.90

Finding the Fourth Proportional to 291,219.02, 436,828.35 and 80,856.90

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Solution

The fourth proportional to 291,219.02, 436,828.35 and 80,856.90 is: 121,285.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,219.02 : 436,828.35 = 80,856.90 : x
  2. Step 2: Convert to fraction form
    291,219.02/436,828.35 = 80,856.90/x
  3. Step 3: Cross multiply
    291,219.02x = 436,828.35 × 80,856.90
  4. Step 4: Simplify right side
    291,219.02x = 35,320,586,213.12
  5. Step 5: Solve for x
    x = 35,320,586,213.12/291,219.02
  6. Step 6: Final answer
    x = 121,285.30

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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.