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Finding the Fourth Proportional to 429,919.52, 644,119.80 and 261,095.12

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Solution

The fourth proportional to 429,919.52, 644,119.80 and 261,095.12 is: 391,181.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,919.52 : 644,119.80 = 261,095.12 : x
  2. Step 2: Convert to fraction form
    429,919.52/644,119.80 = 261,095.12/x
  3. Step 3: Cross multiply
    429,919.52x = 644,119.80 × 261,095.12
  4. Step 4: Simplify right side
    429,919.52x = 168,176,536,475.38
  5. Step 5: Solve for x
    x = 168,176,536,475.38/429,919.52
  6. Step 6: Final answer
    x = 391,181.44

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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.