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Finding the Fourth Proportional to 498,018.87, 687,264.62 and 271,662.75

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Solution

The fourth proportional to 498,018.87, 687,264.62 and 271,662.75 is: 374,893.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,018.87 : 687,264.62 = 271,662.75 : x
  2. Step 2: Convert to fraction form
    498,018.87/687,264.62 = 271,662.75/x
  3. Step 3: Cross multiply
    498,018.87x = 687,264.62 × 271,662.75
  4. Step 4: Simplify right side
    498,018.87x = 186,704,195,288.59
  5. Step 5: Solve for x
    x = 186,704,195,288.59/498,018.87
  6. Step 6: Final answer
    x = 374,893.82

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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.