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Finding the Fourth Proportional to 313,940.20, 470,910.30 and 251,732.20

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Solution

The fourth proportional to 313,940.20, 470,910.30 and 251,732.20 is: 377,598.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,940.20 : 470,910.30 = 251,732.20 : x
  2. Step 2: Convert to fraction form
    313,940.20/470,910.30 = 251,732.20/x
  3. Step 3: Cross multiply
    313,940.20x = 470,910.30 × 251,732.20
  4. Step 4: Simplify right side
    313,940.20x = 118,543,285,821.66
  5. Step 5: Solve for x
    x = 118,543,285,821.66/313,940.20
  6. Step 6: Final answer
    x = 377,598.30

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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.