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Finding the Fourth Proportional to 331,668.40, 497,405.40 and 154,132.60

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Solution

The fourth proportional to 331,668.40, 497,405.40 and 154,132.60 is: 231,153.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,668.40 : 497,405.40 = 154,132.60 : x
  2. Step 2: Convert to fraction form
    331,668.40/497,405.40 = 154,132.60/x
  3. Step 3: Cross multiply
    331,668.40x = 497,405.40 × 154,132.60
  4. Step 4: Simplify right side
    331,668.40x = 76,666,387,556.04
  5. Step 5: Solve for x
    x = 76,666,387,556.04/331,668.40
  6. Step 6: Final answer
    x = 231,153.73

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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.