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Finding the Fourth Proportional to 228,620.73, 315,496.55 and 125,258.60

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Solution

The fourth proportional to 228,620.73, 315,496.55 and 125,258.60 is: 172,856.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,620.73 : 315,496.55 = 125,258.60 : x
  2. Step 2: Convert to fraction form
    228,620.73/315,496.55 = 125,258.60/x
  3. Step 3: Cross multiply
    228,620.73x = 315,496.55 × 125,258.60
  4. Step 4: Simplify right side
    228,620.73x = 39,518,656,157.83
  5. Step 5: Solve for x
    x = 39,518,656,157.83/228,620.73
  6. Step 6: Final answer
    x = 172,856.84

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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.