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Finding the Fourth Proportional to 228,735.32, 315,654.82 and 139,311.32

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Solution

The fourth proportional to 228,735.32, 315,654.82 and 139,311.32 is: 192,249.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,735.32 : 315,654.82 = 139,311.32 : x
  2. Step 2: Convert to fraction form
    228,735.32/315,654.82 = 139,311.32/x
  3. Step 3: Cross multiply
    228,735.32x = 315,654.82 × 139,311.32
  4. Step 4: Simplify right side
    228,735.32x = 43,974,289,638.56
  5. Step 5: Solve for x
    x = 43,974,289,638.56/228,735.32
  6. Step 6: Final answer
    x = 192,249.67

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1.5x scale

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.