Home / 426,110.70-639,166.05-159,879.90

Finding the Fourth Proportional to 426,110.70, 639,166.05 and 159,879.90

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Solution

The fourth proportional to 426,110.70, 639,166.05 and 159,879.90 is: 239,819.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,110.70 : 639,166.05 = 159,879.90 : x
  2. Step 2: Convert to fraction form
    426,110.70/639,166.05 = 159,879.90/x
  3. Step 3: Cross multiply
    426,110.70x = 639,166.05 × 159,879.90
  4. Step 4: Simplify right side
    426,110.70x = 102,189,804,157.40
  5. Step 5: Solve for x
    x = 102,189,804,157.40/426,110.70
  6. Step 6: Final answer
    x = 239,819.85

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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.