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Finding the Fourth Proportional to 426,144.34, 639,050.39 and 159,759.50

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Solution

The fourth proportional to 426,144.34, 639,050.39 and 159,759.50 is: 239,576.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,144.34 : 639,050.39 = 159,759.50 : x
  2. Step 2: Convert to fraction form
    426,144.34/639,050.39 = 159,759.50/x
  3. Step 3: Cross multiply
    426,144.34x = 639,050.39 × 159,759.50
  4. Step 4: Simplify right side
    426,144.34x = 102,094,369,982.41
  5. Step 5: Solve for x
    x = 102,094,369,982.41/426,144.34
  6. Step 6: Final answer
    x = 239,576.97

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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.