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Finding the Fourth Proportional to 324,468.72, 486,704.16 and 99,827.64

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Solution

The fourth proportional to 324,468.72, 486,704.16 and 99,827.64 is: 149,741.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,468.72 : 486,704.16 = 99,827.64 : x
  2. Step 2: Convert to fraction form
    324,468.72/486,704.16 = 99,827.64/x
  3. Step 3: Cross multiply
    324,468.72x = 486,704.16 × 99,827.64
  4. Step 4: Simplify right side
    324,468.72x = 48,586,527,670.98
  5. Step 5: Solve for x
    x = 48,586,527,670.98/324,468.72
  6. Step 6: Final answer
    x = 149,741.79

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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.