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Finding the Fourth Proportional to 644,681.52, 967,021.17 and 171,366.90

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Solution

The fourth proportional to 644,681.52, 967,021.17 and 171,366.90 is: 257,050.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,681.52 : 967,021.17 = 171,366.90 : x
  2. Step 2: Convert to fraction form
    644,681.52/967,021.17 = 171,366.90/x
  3. Step 3: Cross multiply
    644,681.52x = 967,021.17 × 171,366.90
  4. Step 4: Simplify right side
    644,681.52x = 165,715,420,137.27
  5. Step 5: Solve for x
    x = 165,715,420,137.27/644,681.52
  6. Step 6: Final answer
    x = 257,050.05

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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.