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Finding the Fourth Proportional to 293,511.65, 440,415.18 and 218,781.86

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Solution

The fourth proportional to 293,511.65, 440,415.18 and 218,781.86 is: 328,282.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,511.65 : 440,415.18 = 218,781.86 : x
  2. Step 2: Convert to fraction form
    293,511.65/440,415.18 = 218,781.86/x
  3. Step 3: Cross multiply
    293,511.65x = 440,415.18 × 218,781.86
  4. Step 4: Simplify right side
    293,511.65x = 96,354,850,050.56
  5. Step 5: Solve for x
    x = 96,354,850,050.56/293,511.65
  6. Step 6: Final answer
    x = 328,282.89

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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.