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Finding the Fourth Proportional to 305,337, 421,365.24 and 186,105

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Solution

The fourth proportional to 305,337, 421,365.24 and 186,105 is: 256,825.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,337 : 421,365.24 = 186,105 : x
  2. Step 2: Convert to fraction form
    305,337/421,365.24 = 186,105/x
  3. Step 3: Cross multiply
    305,337x = 421,365.24 × 186,105
  4. Step 4: Simplify right side
    305,337x = 78,418,177,990.20
  5. Step 5: Solve for x
    x = 78,418,177,990.20/305,337
  6. Step 6: Final answer
    x = 256,825.01

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Why These Related Problems?

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