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Finding the Fourth Proportional to 445,624.34, 668,502.72 and 161,336.21

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Solution

The fourth proportional to 445,624.34, 668,502.72 and 161,336.21 is: 242,028.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,624.34 : 668,502.72 = 161,336.21 : x
  2. Step 2: Convert to fraction form
    445,624.34/668,502.72 = 161,336.21/x
  3. Step 3: Cross multiply
    445,624.34x = 668,502.72 × 161,336.21
  4. Step 4: Simplify right side
    445,624.34x = 107,853,691,876.98
  5. Step 5: Solve for x
    x = 107,853,691,876.98/445,624.34
  6. Step 6: Final answer
    x = 242,028.28

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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.