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Finding the Fourth Proportional to 351,998.60, 485,579.25 and 222,719.22

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Solution

The fourth proportional to 351,998.60, 485,579.25 and 222,719.22 is: 307,239.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,998.60 : 485,579.25 = 222,719.22 : x
  2. Step 2: Convert to fraction form
    351,998.60/485,579.25 = 222,719.22/x
  3. Step 3: Cross multiply
    351,998.60x = 485,579.25 × 222,719.22
  4. Step 4: Simplify right side
    351,998.60x = 108,147,831,808.19
  5. Step 5: Solve for x
    x = 108,147,831,808.19/351,998.60
  6. Step 6: Final answer
    x = 307,239.38

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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.