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Finding the Fourth Proportional to 215,297.48, 322,962.70 and 65,550.54

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Solution

The fourth proportional to 215,297.48, 322,962.70 and 65,550.54 is: 98,330.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,297.48 : 322,962.70 = 65,550.54 : x
  2. Step 2: Convert to fraction form
    215,297.48/322,962.70 = 65,550.54/x
  3. Step 3: Cross multiply
    215,297.48x = 322,962.70 × 65,550.54
  4. Step 4: Simplify right side
    215,297.48x = 21,170,379,384.86
  5. Step 5: Solve for x
    x = 21,170,379,384.86/215,297.48
  6. Step 6: Final answer
    x = 98,330.83

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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.