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Finding the Fourth Proportional to 247,008.29, 340,866.99 and 139,576

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Solution

The fourth proportional to 247,008.29, 340,866.99 and 139,576 is: 192,612.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,008.29 : 340,866.99 = 139,576 : x
  2. Step 2: Convert to fraction form
    247,008.29/340,866.99 = 139,576/x
  3. Step 3: Cross multiply
    247,008.29x = 340,866.99 × 139,576
  4. Step 4: Simplify right side
    247,008.29x = 47,576,850,996.24
  5. Step 5: Solve for x
    x = 47,576,850,996.24/247,008.29
  6. Step 6: Final answer
    x = 192,612.37

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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.