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Finding the Fourth Proportional to 228,710.20, 315,620.22 and 125,343.94

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Solution

The fourth proportional to 228,710.20, 315,620.22 and 125,343.94 is: 172,974.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,710.20 : 315,620.22 = 125,343.94 : x
  2. Step 2: Convert to fraction form
    228,710.20/315,620.22 = 125,343.94/x
  3. Step 3: Cross multiply
    228,710.20x = 315,620.22 × 125,343.94
  4. Step 4: Simplify right side
    228,710.20x = 39,561,081,918.47
  5. Step 5: Solve for x
    x = 39,561,081,918.47/228,710.20
  6. Step 6: Final answer
    x = 172,974.72

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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.