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Finding the Fourth Proportional to 293,461.20, 440,191.80 and 71,845.20

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Solution

The fourth proportional to 293,461.20, 440,191.80 and 71,845.20 is: 107,767.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,461.20 : 440,191.80 = 71,845.20 : x
  2. Step 2: Convert to fraction form
    293,461.20/440,191.80 = 71,845.20/x
  3. Step 3: Cross multiply
    293,461.20x = 440,191.80 × 71,845.20
  4. Step 4: Simplify right side
    293,461.20x = 31,625,667,909.36
  5. Step 5: Solve for x
    x = 31,625,667,909.36/293,461.20
  6. Step 6: Final answer
    x = 107,767.80

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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.