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Finding the Fourth Proportional to 293,717.20, 440,575.80 and 200,405.20

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Solution

The fourth proportional to 293,717.20, 440,575.80 and 200,405.20 is: 300,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,717.20 : 440,575.80 = 200,405.20 : x
  2. Step 2: Convert to fraction form
    293,717.20/440,575.80 = 200,405.20/x
  3. Step 3: Cross multiply
    293,717.20x = 440,575.80 × 200,405.20
  4. Step 4: Simplify right side
    293,717.20x = 88,293,681,314.16
  5. Step 5: Solve for x
    x = 88,293,681,314.16/293,717.20
  6. Step 6: Final answer
    x = 300,607.80

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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.