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Finding the Fourth Proportional to 228,712.87, 315,625.61 and 126,740.03

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Solution

The fourth proportional to 228,712.87, 315,625.61 and 126,740.03 is: 174,902.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,712.87 : 315,625.61 = 126,740.03 : x
  2. Step 2: Convert to fraction form
    228,712.87/315,625.61 = 126,740.03/x
  3. Step 3: Cross multiply
    228,712.87x = 315,625.61 × 126,740.03
  4. Step 4: Simplify right side
    228,712.87x = 40,002,400,544.51
  5. Step 5: Solve for x
    x = 40,002,400,544.51/228,712.87
  6. Step 6: Final answer
    x = 174,902.27

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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.