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Finding the Fourth Proportional to 259,740.34, 388,906.72 and 134,818.90

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Solution

The fourth proportional to 259,740.34, 388,906.72 and 134,818.90 is: 201,863.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,740.34 : 388,906.72 = 134,818.90 : x
  2. Step 2: Convert to fraction form
    259,740.34/388,906.72 = 134,818.90/x
  3. Step 3: Cross multiply
    259,740.34x = 388,906.72 × 134,818.90
  4. Step 4: Simplify right side
    259,740.34x = 52,431,974,883.69
  5. Step 5: Solve for x
    x = 52,431,974,883.69/259,740.34
  6. Step 6: Final answer
    x = 201,863.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.