Home / 639,237.20-958,181.77-212,659.10

Finding the Fourth Proportional to 639,237.20, 958,181.77 and 212,659.10

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Solution

The fourth proportional to 639,237.20, 958,181.77 and 212,659.10 is: 318,764.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,237.20 : 958,181.77 = 212,659.10 : x
  2. Step 2: Convert to fraction form
    639,237.20/958,181.77 = 212,659.10/x
  3. Step 3: Cross multiply
    639,237.20x = 958,181.77 × 212,659.10
  4. Step 4: Simplify right side
    639,237.20x = 203,766,068,320.66
  5. Step 5: Solve for x
    x = 203,766,068,320.66/639,237.20
  6. Step 6: Final answer
    x = 318,764.41

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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.