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Finding the Fourth Proportional to 215,370.57, 323,101.86 and 65,622.80

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Solution

The fourth proportional to 215,370.57, 323,101.86 and 65,622.80 is: 98,448.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,370.57 : 323,101.86 = 65,622.80 : x
  2. Step 2: Convert to fraction form
    215,370.57/323,101.86 = 65,622.80/x
  3. Step 3: Cross multiply
    215,370.57x = 323,101.86 × 65,622.80
  4. Step 4: Simplify right side
    215,370.57x = 21,202,849,546.16
  5. Step 5: Solve for x
    x = 21,202,849,546.16/215,370.57
  6. Step 6: Final answer
    x = 98,448.22

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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.