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Finding the Fourth Proportional to 287,714.89, 431,556.99 and 88,035.41

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Solution

The fourth proportional to 287,714.89, 431,556.99 and 88,035.41 is: 132,048.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,714.89 : 431,556.99 = 88,035.41 : x
  2. Step 2: Convert to fraction form
    287,714.89/431,556.99 = 88,035.41/x
  3. Step 3: Cross multiply
    287,714.89x = 431,556.99 × 88,035.41
  4. Step 4: Simplify right side
    287,714.89x = 37,992,295,121.87
  5. Step 5: Solve for x
    x = 37,992,295,121.87/287,714.89
  6. Step 6: Final answer
    x = 132,048.42

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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.