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Finding the Fourth Proportional to 493,967.68, 681,787.20 and 279,232.36

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Solution

The fourth proportional to 493,967.68, 681,787.20 and 279,232.36 is: 385,403.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,967.68 : 681,787.20 = 279,232.36 : x
  2. Step 2: Convert to fraction form
    493,967.68/681,787.20 = 279,232.36/x
  3. Step 3: Cross multiply
    493,967.68x = 681,787.20 × 279,232.36
  4. Step 4: Simplify right side
    493,967.68x = 190,377,048,873.79
  5. Step 5: Solve for x
    x = 190,377,048,873.79/493,967.68
  6. Step 6: Final answer
    x = 385,403.86

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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.