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Finding the Fourth Proportional to 487,996.77, 673,449.80 and 273,131.31

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Solution

The fourth proportional to 487,996.77, 673,449.80 and 273,131.31 is: 376,929.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,996.77 : 673,449.80 = 273,131.31 : x
  2. Step 2: Convert to fraction form
    487,996.77/673,449.80 = 273,131.31/x
  3. Step 3: Cross multiply
    487,996.77x = 673,449.80 × 273,131.31
  4. Step 4: Simplify right side
    487,996.77x = 183,940,224,727.58
  5. Step 5: Solve for x
    x = 183,940,224,727.58/487,996.77
  6. Step 6: Final answer
    x = 376,929.18

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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.