Home / 426,442.92-639,429.06-173,658.60

Finding the Fourth Proportional to 426,442.92, 639,429.06 and 173,658.60

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Solution

The fourth proportional to 426,442.92, 639,429.06 and 173,658.60 is: 260,392.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,442.92 : 639,429.06 = 173,658.60 : x
  2. Step 2: Convert to fraction form
    426,442.92/639,429.06 = 173,658.60/x
  3. Step 3: Cross multiply
    426,442.92x = 639,429.06 × 173,658.60
  4. Step 4: Simplify right side
    426,442.92x = 111,042,355,358.92
  5. Step 5: Solve for x
    x = 111,042,355,358.92/426,442.92
  6. Step 6: Final answer
    x = 260,392.07

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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.