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Finding the Fourth Proportional to 639,010.80, 958,151.70 and 239,664.60

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Solution

The fourth proportional to 639,010.80, 958,151.70 and 239,664.60 is: 359,360.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,010.80 : 958,151.70 = 239,664.60 : x
  2. Step 2: Convert to fraction form
    639,010.80/958,151.70 = 239,664.60/x
  3. Step 3: Cross multiply
    639,010.80x = 958,151.70 × 239,664.60
  4. Step 4: Simplify right side
    639,010.80x = 229,635,043,919.82
  5. Step 5: Solve for x
    x = 229,635,043,919.82/639,010.80
  6. Step 6: Final answer
    x = 359,360.19

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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.