Home / 345,680.20-518,520.30-251,201.80

Finding the Fourth Proportional to 345,680.20, 518,520.30 and 251,201.80

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Solution

The fourth proportional to 345,680.20, 518,520.30 and 251,201.80 is: 376,802.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,680.20 : 518,520.30 = 251,201.80 : x
  2. Step 2: Convert to fraction form
    345,680.20/518,520.30 = 251,201.80/x
  3. Step 3: Cross multiply
    345,680.20x = 518,520.30 × 251,201.80
  4. Step 4: Simplify right side
    345,680.20x = 130,253,232,696.54
  5. Step 5: Solve for x
    x = 130,253,232,696.54/345,680.20
  6. Step 6: Final answer
    x = 376,802.70

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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.