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Finding the Fourth Proportional to 393,654.70, 590,575.79 and 127,415.26

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Solution

The fourth proportional to 393,654.70, 590,575.79 and 127,415.26 is: 191,153.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,654.70 : 590,575.79 = 127,415.26 : x
  2. Step 2: Convert to fraction form
    393,654.70/590,575.79 = 127,415.26/x
  3. Step 3: Cross multiply
    393,654.70x = 590,575.79 × 127,415.26
  4. Step 4: Simplify right side
    393,654.70x = 75,248,367,195.48
  5. Step 5: Solve for x
    x = 75,248,367,195.48/393,654.70
  6. Step 6: Final answer
    x = 191,153.23

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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.