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Finding the Fourth Proportional to 644,879.76, 967,318.48 and 171,565.12

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Solution

The fourth proportional to 644,879.76, 967,318.48 and 171,565.12 is: 257,347.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,879.76 : 967,318.48 = 171,565.12 : x
  2. Step 2: Convert to fraction form
    644,879.76/967,318.48 = 171,565.12/x
  3. Step 3: Cross multiply
    644,879.76x = 967,318.48 × 171,565.12
  4. Step 4: Simplify right side
    644,879.76x = 165,958,111,099.42
  5. Step 5: Solve for x
    x = 165,958,111,099.42/644,879.76
  6. Step 6: Final answer
    x = 257,347.37

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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.