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Finding the Fourth Proportional to 373,817.54, 515,861.62 and 212,669.16

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Solution

The fourth proportional to 373,817.54, 515,861.62 and 212,669.16 is: 293,479.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,817.54 : 515,861.62 = 212,669.16 : x
  2. Step 2: Convert to fraction form
    373,817.54/515,861.62 = 212,669.16/x
  3. Step 3: Cross multiply
    373,817.54x = 515,861.62 × 212,669.16
  4. Step 4: Simplify right side
    373,817.54x = 109,707,857,401.64
  5. Step 5: Solve for x
    x = 109,707,857,401.64/373,817.54
  6. Step 6: Final answer
    x = 293,479.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.