Home / 403,640.82-556,995.57-240,288.66

Finding the Fourth Proportional to 403,640.82, 556,995.57 and 240,288.66

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Solution

The fourth proportional to 403,640.82, 556,995.57 and 240,288.66 is: 331,581.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,640.82 : 556,995.57 = 240,288.66 : x
  2. Step 2: Convert to fraction form
    403,640.82/556,995.57 = 240,288.66/x
  3. Step 3: Cross multiply
    403,640.82x = 556,995.57 × 240,288.66
  4. Step 4: Simplify right side
    403,640.82x = 133,839,719,141.24
  5. Step 5: Solve for x
    x = 133,839,719,141.24/403,640.82
  6. Step 6: Final answer
    x = 331,581.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.