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Finding the Fourth Proportional to 487,912.69, 673,305.04 and 270,131.06

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Solution

The fourth proportional to 487,912.69, 673,305.04 and 270,131.06 is: 372,772.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,912.69 : 673,305.04 = 270,131.06 : x
  2. Step 2: Convert to fraction form
    487,912.69/673,305.04 = 270,131.06/x
  3. Step 3: Cross multiply
    487,912.69x = 673,305.04 × 270,131.06
  4. Step 4: Simplify right side
    487,912.69x = 181,880,606,179.47
  5. Step 5: Solve for x
    x = 181,880,606,179.47/487,912.69
  6. Step 6: Final answer
    x = 372,772.86

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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.