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Finding the Fourth Proportional to 498,019.87, 687,265.99 and 271,663.75

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Solution

The fourth proportional to 498,019.87, 687,265.99 and 271,663.75 is: 374,895.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,019.87 : 687,265.99 = 271,663.75 : x
  2. Step 2: Convert to fraction form
    498,019.87/687,265.99 = 271,663.75/x
  3. Step 3: Cross multiply
    498,019.87x = 687,265.99 × 271,663.75
  4. Step 4: Simplify right side
    498,019.87x = 186,705,256,090.86
  5. Step 5: Solve for x
    x = 186,705,256,090.86/498,019.87
  6. Step 6: Final answer
    x = 374,895.19

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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.