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Finding the Fourth Proportional to 426,358.92, 639,162 and 173,850.60

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Solution

The fourth proportional to 426,358.92, 639,162 and 173,850.60 is: 260,622.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,358.92 : 639,162 = 173,850.60 : x
  2. Step 2: Convert to fraction form
    426,358.92/639,162 = 173,850.60/x
  3. Step 3: Cross multiply
    426,358.92x = 639,162 × 173,850.60
  4. Step 4: Simplify right side
    426,358.92x = 111,118,697,197.20
  5. Step 5: Solve for x
    x = 111,118,697,197.20/426,358.92
  6. Step 6: Final answer
    x = 260,622.43

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1.5x scale

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.