Home / 309,289.60-426,819.30-173,324.62

Finding the Fourth Proportional to 309,289.60, 426,819.30 and 173,324.62

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Solution

The fourth proportional to 309,289.60, 426,819.30 and 173,324.62 is: 239,187.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,289.60 : 426,819.30 = 173,324.62 : x
  2. Step 2: Convert to fraction form
    309,289.60/426,819.30 = 173,324.62/x
  3. Step 3: Cross multiply
    309,289.60x = 426,819.30 × 173,324.62
  4. Step 4: Simplify right side
    309,289.60x = 73,978,292,981.17
  5. Step 5: Solve for x
    x = 73,978,292,981.17/309,289.60
  6. Step 6: Final answer
    x = 239,187.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.