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Finding the Fourth Proportional to 288,637.60, 398,324.40 and 161,321.44

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Solution

The fourth proportional to 288,637.60, 398,324.40 and 161,321.44 is: 222,626.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,637.60 : 398,324.40 = 161,321.44 : x
  2. Step 2: Convert to fraction form
    288,637.60/398,324.40 = 161,321.44/x
  3. Step 3: Cross multiply
    288,637.60x = 398,324.40 × 161,321.44
  4. Step 4: Simplify right side
    288,637.60x = 64,258,265,795.14
  5. Step 5: Solve for x
    x = 64,258,265,795.14/288,637.60
  6. Step 6: Final answer
    x = 222,626.11

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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.