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Finding the Fourth Proportional to 447,108.86, 670,663.26 and 131,565.86

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Solution

The fourth proportional to 447,108.86, 670,663.26 and 131,565.86 is: 197,348.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,108.86 : 670,663.26 = 131,565.86 : x
  2. Step 2: Convert to fraction form
    447,108.86/670,663.26 = 131,565.86/x
  3. Step 3: Cross multiply
    447,108.86x = 670,663.26 × 131,565.86
  4. Step 4: Simplify right side
    447,108.86x = 88,236,388,572.30
  5. Step 5: Solve for x
    x = 88,236,388,572.30/447,108.86
  6. Step 6: Final answer
    x = 197,348.78

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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.