Home / 429,540.30-644,306.34-261,107.14

Finding the Fourth Proportional to 429,540.30, 644,306.34 and 261,107.14

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Solution

The fourth proportional to 429,540.30, 644,306.34 and 261,107.14 is: 391,658.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,540.30 : 644,306.34 = 261,107.14 : x
  2. Step 2: Convert to fraction form
    429,540.30/644,306.34 = 261,107.14/x
  3. Step 3: Cross multiply
    429,540.30x = 644,306.34 × 261,107.14
  4. Step 4: Simplify right side
    429,540.30x = 168,232,985,721.27
  5. Step 5: Solve for x
    x = 168,232,985,721.27/429,540.30
  6. Step 6: Final answer
    x = 391,658.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.