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Finding the Fourth Proportional to 293,997.40, 440,996.10 and 72,381.40

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Solution

The fourth proportional to 293,997.40, 440,996.10 and 72,381.40 is: 108,572.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,997.40 : 440,996.10 = 72,381.40 : x
  2. Step 2: Convert to fraction form
    293,997.40/440,996.10 = 72,381.40/x
  3. Step 3: Cross multiply
    293,997.40x = 440,996.10 × 72,381.40
  4. Step 4: Simplify right side
    293,997.40x = 31,919,915,112.54
  5. Step 5: Solve for x
    x = 31,919,915,112.54/293,997.40
  6. Step 6: Final answer
    x = 108,572.10

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1.5x scale

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.