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Finding the Fourth Proportional to 487,493.60, 672,745.77 and 272,634.17

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Solution

The fourth proportional to 487,493.60, 672,745.77 and 272,634.17 is: 376,237.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,493.60 : 672,745.77 = 272,634.17 : x
  2. Step 2: Convert to fraction form
    487,493.60/672,745.77 = 272,634.17/x
  3. Step 3: Cross multiply
    487,493.60x = 672,745.77 × 272,634.17
  4. Step 4: Simplify right side
    487,493.60x = 183,413,481,261.23
  5. Step 5: Solve for x
    x = 183,413,481,261.23/487,493.60
  6. Step 6: Final answer
    x = 376,237.73

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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.