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Finding the Fourth Proportional to 487,891.49, 673,279.53 and 267,128.33

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Solution

The fourth proportional to 487,891.49, 673,279.53 and 267,128.33 is: 368,631.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,891.49 : 673,279.53 = 267,128.33 : x
  2. Step 2: Convert to fraction form
    487,891.49/673,279.53 = 267,128.33/x
  3. Step 3: Cross multiply
    487,891.49x = 673,279.53 × 267,128.33
  4. Step 4: Simplify right side
    487,891.49x = 179,852,036,472.09
  5. Step 5: Solve for x
    x = 179,852,036,472.09/487,891.49
  6. Step 6: Final answer
    x = 368,631.22

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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.