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Finding the Fourth Proportional to 278,757.04, 384,672.39 and 157,895.90

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Solution

The fourth proportional to 278,757.04, 384,672.39 and 157,895.90 is: 217,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,757.04 : 384,672.39 = 157,895.90 : x
  2. Step 2: Convert to fraction form
    278,757.04/384,672.39 = 157,895.90/x
  3. Step 3: Cross multiply
    278,757.04x = 384,672.39 × 157,895.90
  4. Step 4: Simplify right side
    278,757.04x = 60,738,191,300.84
  5. Step 5: Solve for x
    x = 60,738,191,300.84/278,757.04
  6. Step 6: Final answer
    x = 217,889.36

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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.