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Finding the Fourth Proportional to 445,863.42, 668,817 and 179,587.98

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Solution

The fourth proportional to 445,863.42, 668,817 and 179,587.98 is: 269,390.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,863.42 : 668,817 = 179,587.98 : x
  2. Step 2: Convert to fraction form
    445,863.42/668,817 = 179,587.98/x
  3. Step 3: Cross multiply
    445,863.42x = 668,817 × 179,587.98
  4. Step 4: Simplify right side
    445,863.42x = 120,111,494,019.66
  5. Step 5: Solve for x
    x = 120,111,494,019.66/445,863.42
  6. Step 6: Final answer
    x = 269,390.78

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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.