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Finding the Fourth Proportional to 445,780.86, 668,668.95 and 108,823.29

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Solution

The fourth proportional to 445,780.86, 668,668.95 and 108,823.29 is: 163,234.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,780.86 : 668,668.95 = 108,823.29 : x
  2. Step 2: Convert to fraction form
    445,780.86/668,668.95 = 108,823.29/x
  3. Step 3: Cross multiply
    445,780.86x = 668,668.95 × 108,823.29
  4. Step 4: Simplify right side
    445,780.86x = 72,766,755,059.85
  5. Step 5: Solve for x
    x = 72,766,755,059.85/445,780.86
  6. Step 6: Final answer
    x = 163,234.36

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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.