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Finding the Fourth Proportional to 340,630.56, 470,067.99 and 187,665.21

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Solution

The fourth proportional to 340,630.56, 470,067.99 and 187,665.21 is: 258,976.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,630.56 : 470,067.99 = 187,665.21 : x
  2. Step 2: Convert to fraction form
    340,630.56/470,067.99 = 187,665.21/x
  3. Step 3: Cross multiply
    340,630.56x = 470,067.99 × 187,665.21
  4. Step 4: Simplify right side
    340,630.56x = 88,215,408,057.63
  5. Step 5: Solve for x
    x = 88,215,408,057.63/340,630.56
  6. Step 6: Final answer
    x = 258,976.79

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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.