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Finding the Fourth Proportional to 286,042.61, 428,897.75 and 108,452.73

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Solution

The fourth proportional to 286,042.61, 428,897.75 and 108,452.73 is: 162,616.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,042.61 : 428,897.75 = 108,452.73 : x
  2. Step 2: Convert to fraction form
    286,042.61/428,897.75 = 108,452.73/x
  3. Step 3: Cross multiply
    286,042.61x = 428,897.75 × 108,452.73
  4. Step 4: Simplify right side
    286,042.61x = 46,515,131,336.09
  5. Step 5: Solve for x
    x = 46,515,131,336.09/286,042.61
  6. Step 6: Final answer
    x = 162,616.09

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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.