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Finding the Fourth Proportional to 288,063.21, 397,467.88 and 165,531.90

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Solution

The fourth proportional to 288,063.21, 397,467.88 and 165,531.90 is: 228,399.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,063.21 : 397,467.88 = 165,531.90 : x
  2. Step 2: Convert to fraction form
    288,063.21/397,467.88 = 165,531.90/x
  3. Step 3: Cross multiply
    288,063.21x = 397,467.88 × 165,531.90
  4. Step 4: Simplify right side
    288,063.21x = 65,793,613,365.37
  5. Step 5: Solve for x
    x = 65,793,613,365.37/288,063.21
  6. Step 6: Final answer
    x = 228,399.92

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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.