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Finding the Fourth Proportional to 493,780.04, 681,471.90 and 278,933.96

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Solution

The fourth proportional to 493,780.04, 681,471.90 and 278,933.96 is: 384,960.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,780.04 : 681,471.90 = 278,933.96 : x
  2. Step 2: Convert to fraction form
    493,780.04/681,471.90 = 278,933.96/x
  3. Step 3: Cross multiply
    493,780.04x = 681,471.90 × 278,933.96
  4. Step 4: Simplify right side
    493,780.04x = 190,085,655,695.72
  5. Step 5: Solve for x
    x = 190,085,655,695.72/493,780.04
  6. Step 6: Final answer
    x = 384,960.19

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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.