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Finding the Fourth Proportional to 429,449.83, 644,170.62 and 261,016.63

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Solution

The fourth proportional to 429,449.83, 644,170.62 and 261,016.63 is: 391,522.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,449.83 : 644,170.62 = 261,016.63 : x
  2. Step 2: Convert to fraction form
    429,449.83/644,170.62 = 261,016.63/x
  3. Step 3: Cross multiply
    429,449.83x = 644,170.62 × 261,016.63
  4. Step 4: Simplify right side
    429,449.83x = 168,139,244,377.41
  5. Step 5: Solve for x
    x = 168,139,244,377.41/429,449.83
  6. Step 6: Final answer
    x = 391,522.44

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1.5x scale

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.