Home / 291,279.24-436,942.55-80,917.18

Finding the Fourth Proportional to 291,279.24, 436,942.55 and 80,917.18

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Solution

The fourth proportional to 291,279.24, 436,942.55 and 80,917.18 is: 121,382.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,279.24 : 436,942.55 = 80,917.18 : x
  2. Step 2: Convert to fraction form
    291,279.24/436,942.55 = 80,917.18/x
  3. Step 3: Cross multiply
    291,279.24x = 436,942.55 × 80,917.18
  4. Step 4: Simplify right side
    291,279.24x = 35,356,158,077.95
  5. Step 5: Solve for x
    x = 35,356,158,077.95/291,279.24
  6. Step 6: Final answer
    x = 121,382.35

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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.