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Finding the Fourth Proportional to 288,573.69, 398,229.75 and 161,249.58

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Solution

The fourth proportional to 288,573.69, 398,229.75 and 161,249.58 is: 222,523.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,573.69 : 398,229.75 = 161,249.58 : x
  2. Step 2: Convert to fraction form
    288,573.69/398,229.75 = 161,249.58/x
  3. Step 3: Cross multiply
    288,573.69x = 398,229.75 × 161,249.58
  4. Step 4: Simplify right side
    288,573.69x = 64,214,379,931.01
  5. Step 5: Solve for x
    x = 64,214,379,931.01/288,573.69
  6. Step 6: Final answer
    x = 222,523.34

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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.