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Finding the Fourth Proportional to 287,418.84, 396,638.12 and 166,630.44

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Solution

The fourth proportional to 287,418.84, 396,638.12 and 166,630.44 is: 229,950.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,418.84 : 396,638.12 = 166,630.44 : x
  2. Step 2: Convert to fraction form
    287,418.84/396,638.12 = 166,630.44/x
  3. Step 3: Cross multiply
    287,418.84x = 396,638.12 × 166,630.44
  4. Step 4: Simplify right side
    287,418.84x = 66,091,984,456.37
  5. Step 5: Solve for x
    x = 66,091,984,456.37/287,418.84
  6. Step 6: Final answer
    x = 229,950.08

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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.