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Finding the Fourth Proportional to 287,397.32, 396,572.36 and 166,536.41

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Solution

The fourth proportional to 287,397.32, 396,572.36 and 166,536.41 is: 229,799.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,397.32 : 396,572.36 = 166,536.41 : x
  2. Step 2: Convert to fraction form
    287,397.32/396,572.36 = 166,536.41/x
  3. Step 3: Cross multiply
    287,397.32x = 396,572.36 × 166,536.41
  4. Step 4: Simplify right side
    287,397.32x = 66,043,734,324.08
  5. Step 5: Solve for x
    x = 66,043,734,324.08/287,397.32
  6. Step 6: Final answer
    x = 229,799.41

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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.