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Finding the Fourth Proportional to 198,679.70, 298,019.60 and 58,438.32

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Solution

The fourth proportional to 198,679.70, 298,019.60 and 58,438.32 is: 87,657.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,679.70 : 298,019.60 = 58,438.32 : x
  2. Step 2: Convert to fraction form
    198,679.70/298,019.60 = 58,438.32/x
  3. Step 3: Cross multiply
    198,679.70x = 298,019.60 × 58,438.32
  4. Step 4: Simplify right side
    198,679.70x = 17,415,764,751.07
  5. Step 5: Solve for x
    x = 17,415,764,751.07/198,679.70
  6. Step 6: Final answer
    x = 87,657.49

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1.5x scale

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.