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Finding the Fourth Proportional to 484,449, 668,539.62 and 272,481

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Solution

The fourth proportional to 484,449, 668,539.62 and 272,481 is: 376,023.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,449 : 668,539.62 = 272,481 : x
  2. Step 2: Convert to fraction form
    484,449/668,539.62 = 272,481/x
  3. Step 3: Cross multiply
    484,449x = 668,539.62 × 272,481
  4. Step 4: Simplify right side
    484,449x = 182,164,344,197.22
  5. Step 5: Solve for x
    x = 182,164,344,197.22/484,449
  6. Step 6: Final answer
    x = 376,023.78

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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.