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Finding the Fourth Proportional to 288,580.22, 398,233.06 and 161,256.86

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Solution

The fourth proportional to 288,580.22, 398,233.06 and 161,256.86 is: 222,530.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,580.22 : 398,233.06 = 161,256.86 : x
  2. Step 2: Convert to fraction form
    288,580.22/398,233.06 = 161,256.86/x
  3. Step 3: Cross multiply
    288,580.22x = 398,233.06 × 161,256.86
  4. Step 4: Simplify right side
    288,580.22x = 64,217,810,409.48
  5. Step 5: Solve for x
    x = 64,217,810,409.48/288,580.22
  6. Step 6: Final answer
    x = 222,530.19

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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.