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Finding the Fourth Proportional to 426,118.62, 639,152.88 and 159,856.84

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Solution

The fourth proportional to 426,118.62, 639,152.88 and 159,856.84 is: 239,775.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,118.62 : 639,152.88 = 159,856.84 : x
  2. Step 2: Convert to fraction form
    426,118.62/639,152.88 = 159,856.84/x
  3. Step 3: Cross multiply
    426,118.62x = 639,152.88 × 159,856.84
  4. Step 4: Simplify right side
    426,118.62x = 102,172,959,873.18
  5. Step 5: Solve for x
    x = 102,172,959,873.18/426,118.62
  6. Step 6: Final answer
    x = 239,775.86

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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.