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Finding the Fourth Proportional to 228,716.47, 315,630.59 and 126,743.65

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Solution

The fourth proportional to 228,716.47, 315,630.59 and 126,743.65 is: 174,907.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,716.47 : 315,630.59 = 126,743.65 : x
  2. Step 2: Convert to fraction form
    228,716.47/315,630.59 = 126,743.65/x
  3. Step 3: Cross multiply
    228,716.47x = 315,630.59 × 126,743.65
  4. Step 4: Simplify right side
    228,716.47x = 40,004,171,605.46
  5. Step 5: Solve for x
    x = 40,004,171,605.46/228,716.47
  6. Step 6: Final answer
    x = 174,907.26

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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.