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Finding the Fourth Proportional to 429,659.33, 644,484.92 and 261,226.17

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Solution

The fourth proportional to 429,659.33, 644,484.92 and 261,226.17 is: 391,836.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,659.33 : 644,484.92 = 261,226.17 : x
  2. Step 2: Convert to fraction form
    429,659.33/644,484.92 = 261,226.17/x
  3. Step 3: Cross multiply
    429,659.33x = 644,484.92 × 261,226.17
  4. Step 4: Simplify right side
    429,659.33x = 168,356,325,968.23
  5. Step 5: Solve for x
    x = 168,356,325,968.23/429,659.33
  6. Step 6: Final answer
    x = 391,836.78

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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.