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Finding the Fourth Proportional to 379,791.43, 524,176.62 and 218,739.69

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Solution

The fourth proportional to 379,791.43, 524,176.62 and 218,739.69 is: 301,897.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,791.43 : 524,176.62 = 218,739.69 : x
  2. Step 2: Convert to fraction form
    379,791.43/524,176.62 = 218,739.69/x
  3. Step 3: Cross multiply
    379,791.43x = 524,176.62 × 218,739.69
  4. Step 4: Simplify right side
    379,791.43x = 114,658,230,543.77
  5. Step 5: Solve for x
    x = 114,658,230,543.77/379,791.43
  6. Step 6: Final answer
    x = 301,897.89

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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.