Home / 215,429.55-323,190.83-65,665.81

Finding the Fourth Proportional to 215,429.55, 323,190.83 and 65,665.81

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Solution

The fourth proportional to 215,429.55, 323,190.83 and 65,665.81 is: 98,512.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,429.55 : 323,190.83 = 65,665.81 : x
  2. Step 2: Convert to fraction form
    215,429.55/323,190.83 = 65,665.81/x
  3. Step 3: Cross multiply
    215,429.55x = 323,190.83 × 65,665.81
  4. Step 4: Simplify right side
    215,429.55x = 21,222,587,636.52
  5. Step 5: Solve for x
    x = 21,222,587,636.52/215,429.55
  6. Step 6: Final answer
    x = 98,512.89

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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.