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Finding the Fourth Proportional to 493,818.96, 681,525.47 and 278,972.87

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Solution

The fourth proportional to 493,818.96, 681,525.47 and 278,972.87 is: 385,013.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,818.96 : 681,525.47 = 278,972.87 : x
  2. Step 2: Convert to fraction form
    493,818.96/681,525.47 = 278,972.87/x
  3. Step 3: Cross multiply
    493,818.96x = 681,525.47 × 278,972.87
  4. Step 4: Simplify right side
    493,818.96x = 190,127,112,936.37
  5. Step 5: Solve for x
    x = 190,127,112,936.37/493,818.96
  6. Step 6: Final answer
    x = 385,013.80

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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.