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Finding the Fourth Proportional to 485,558.81, 670,072.07 and 270,694.57

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Solution

The fourth proportional to 485,558.81, 670,072.07 and 270,694.57 is: 373,559.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,558.81 : 670,072.07 = 270,694.57 : x
  2. Step 2: Convert to fraction form
    485,558.81/670,072.07 = 270,694.57/x
  3. Step 3: Cross multiply
    485,558.81x = 670,072.07 × 270,694.57
  4. Step 4: Simplify right side
    485,558.81x = 181,384,870,857.66
  5. Step 5: Solve for x
    x = 181,384,870,857.66/485,558.81
  6. Step 6: Final answer
    x = 373,559.02

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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.