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Finding the Fourth Proportional to 445,781.86, 668,670.45 and 108,824.29

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Solution

The fourth proportional to 445,781.86, 668,670.45 and 108,824.29 is: 163,235.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,781.86 : 668,670.45 = 108,824.29 : x
  2. Step 2: Convert to fraction form
    445,781.86/668,670.45 = 108,824.29/x
  3. Step 3: Cross multiply
    445,781.86x = 668,670.45 × 108,824.29
  4. Step 4: Simplify right side
    445,781.86x = 72,767,586,965.23
  5. Step 5: Solve for x
    x = 72,767,586,965.23/445,781.86
  6. Step 6: Final answer
    x = 163,235.86

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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.