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Finding the Fourth Proportional to 340,879.52, 470,415.17 and 187,914.36

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Solution

The fourth proportional to 340,879.52, 470,415.17 and 187,914.36 is: 259,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,879.52 : 470,415.17 = 187,914.36 : x
  2. Step 2: Convert to fraction form
    340,879.52/470,415.17 = 187,914.36/x
  3. Step 3: Cross multiply
    340,879.52x = 470,415.17 × 187,914.36
  4. Step 4: Simplify right side
    340,879.52x = 88,397,762,812.54
  5. Step 5: Solve for x
    x = 88,397,762,812.54/340,879.52
  6. Step 6: Final answer
    x = 259,322.60

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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.