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Finding the Fourth Proportional to 278,775.68, 384,682.68 and 157,892.84

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Solution

The fourth proportional to 278,775.68, 384,682.68 and 157,892.84 is: 217,876.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,775.68 : 384,682.68 = 157,892.84 : x
  2. Step 2: Convert to fraction form
    278,775.68/384,682.68 = 157,892.84/x
  3. Step 3: Cross multiply
    278,775.68x = 384,682.68 × 157,892.84
  4. Step 4: Simplify right side
    278,775.68x = 60,738,640,844.01
  5. Step 5: Solve for x
    x = 60,738,640,844.01/278,775.68
  6. Step 6: Final answer
    x = 217,876.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.