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Finding the Fourth Proportional to 278,770.55, 384,489.32 and 187,982.73

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Solution

The fourth proportional to 278,770.55, 384,489.32 and 187,982.73 is: 259,271.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,770.55 : 384,489.32 = 187,982.73 : x
  2. Step 2: Convert to fraction form
    278,770.55/384,489.32 = 187,982.73/x
  3. Step 3: Cross multiply
    278,770.55x = 384,489.32 × 187,982.73
  4. Step 4: Simplify right side
    278,770.55x = 72,277,351,089.53
  5. Step 5: Solve for x
    x = 72,277,351,089.53/278,770.55
  6. Step 6: Final answer
    x = 259,271.84

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1.5x scale

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.