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Finding the Fourth Proportional to 226,761.91, 340,130.56 and 68,978.07

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Solution

The fourth proportional to 226,761.91, 340,130.56 and 68,978.07 is: 103,463.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,761.91 : 340,130.56 = 68,978.07 : x
  2. Step 2: Convert to fraction form
    226,761.91/340,130.56 = 68,978.07/x
  3. Step 3: Cross multiply
    226,761.91x = 340,130.56 × 68,978.07
  4. Step 4: Simplify right side
    226,761.91x = 23,461,549,576.82
  5. Step 5: Solve for x
    x = 23,461,549,576.82/226,761.91
  6. Step 6: Final answer
    x = 103,463.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.