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Finding the Fourth Proportional to 395,486.14, 545,780.21 and 225,736.06

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Solution

The fourth proportional to 395,486.14, 545,780.21 and 225,736.06 is: 311,521.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,486.14 : 545,780.21 = 225,736.06 : x
  2. Step 2: Convert to fraction form
    395,486.14/545,780.21 = 225,736.06/x
  3. Step 3: Cross multiply
    395,486.14x = 545,780.21 × 225,736.06
  4. Step 4: Simplify right side
    395,486.14x = 123,202,270,373.79
  5. Step 5: Solve for x
    x = 123,202,270,373.79/395,486.14
  6. Step 6: Final answer
    x = 311,521.09

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.