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Finding the Fourth Proportional to 279,893.03, 386,130.75 and 177,863.86

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Solution

The fourth proportional to 279,893.03, 386,130.75 and 177,863.86 is: 245,374.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,893.03 : 386,130.75 = 177,863.86 : x
  2. Step 2: Convert to fraction form
    279,893.03/386,130.75 = 177,863.86/x
  3. Step 3: Cross multiply
    279,893.03x = 386,130.75 × 177,863.86
  4. Step 4: Simplify right side
    279,893.03x = 68,678,704,751.37
  5. Step 5: Solve for x
    x = 68,678,704,751.37/279,893.03
  6. Step 6: Final answer
    x = 245,374.83

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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.