Home / 291,297.12-436,969.26-80,935.08

Finding the Fourth Proportional to 291,297.12, 436,969.26 and 80,935.08

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Solution

The fourth proportional to 291,297.12, 436,969.26 and 80,935.08 is: 121,409.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,297.12 : 436,969.26 = 80,935.08 : x
  2. Step 2: Convert to fraction form
    291,297.12/436,969.26 = 80,935.08/x
  3. Step 3: Cross multiply
    291,297.12x = 436,969.26 × 80,935.08
  4. Step 4: Simplify right side
    291,297.12x = 35,366,142,015.64
  5. Step 5: Solve for x
    x = 35,366,142,015.64/291,297.12
  6. Step 6: Final answer
    x = 121,409.17

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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.