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Finding the Fourth Proportional to 215,763.96, 323,755.08 and 145,495.56

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Solution

The fourth proportional to 215,763.96, 323,755.08 and 145,495.56 is: 218,316.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,763.96 : 323,755.08 = 145,495.56 : x
  2. Step 2: Convert to fraction form
    215,763.96/323,755.08 = 145,495.56/x
  3. Step 3: Cross multiply
    215,763.96x = 323,755.08 × 145,495.56
  4. Step 4: Simplify right side
    215,763.96x = 47,104,926,667.44
  5. Step 5: Solve for x
    x = 47,104,926,667.44/215,763.96
  6. Step 6: Final answer
    x = 218,316.94

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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.