Home / 398,942.58-550,540.20-217,654.63

Finding the Fourth Proportional to 398,942.58, 550,540.20 and 217,654.63

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Solution

The fourth proportional to 398,942.58, 550,540.20 and 217,654.63 is: 300,363.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,942.58 : 550,540.20 = 217,654.63 : x
  2. Step 2: Convert to fraction form
    398,942.58/550,540.20 = 217,654.63/x
  3. Step 3: Cross multiply
    398,942.58x = 550,540.20 × 217,654.63
  4. Step 4: Simplify right side
    398,942.58x = 119,827,623,531.13
  5. Step 5: Solve for x
    x = 119,827,623,531.13/398,942.58
  6. Step 6: Final answer
    x = 300,363.08

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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.