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Finding the Fourth Proportional to 498,063.96, 687,339.18 and 271,709.28

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Solution

The fourth proportional to 498,063.96, 687,339.18 and 271,709.28 is: 374,964.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,063.96 : 687,339.18 = 271,709.28 : x
  2. Step 2: Convert to fraction form
    498,063.96/687,339.18 = 271,709.28/x
  3. Step 3: Cross multiply
    498,063.96x = 687,339.18 × 271,709.28
  4. Step 4: Simplify right side
    498,063.96x = 186,756,433,713.59
  5. Step 5: Solve for x
    x = 186,756,433,713.59/498,063.96
  6. Step 6: Final answer
    x = 374,964.76

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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.