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Finding the Fourth Proportional to 312,258.72, 468,334.80 and 112,539.36

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Solution

The fourth proportional to 312,258.72, 468,334.80 and 112,539.36 is: 168,789.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,258.72 : 468,334.80 = 112,539.36 : x
  2. Step 2: Convert to fraction form
    312,258.72/468,334.80 = 112,539.36/x
  3. Step 3: Cross multiply
    312,258.72x = 468,334.80 × 112,539.36
  4. Step 4: Simplify right side
    312,258.72x = 52,706,098,657.73
  5. Step 5: Solve for x
    x = 52,706,098,657.73/312,258.72
  6. Step 6: Final answer
    x = 168,789.84

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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.