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Finding the Fourth Proportional to 247,223.28, 341,153.64 and 139,815.84

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Solution

The fourth proportional to 247,223.28, 341,153.64 and 139,815.84 is: 192,937.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,223.28 : 341,153.64 = 139,815.84 : x
  2. Step 2: Convert to fraction form
    247,223.28/341,153.64 = 139,815.84/x
  3. Step 3: Cross multiply
    247,223.28x = 341,153.64 × 139,815.84
  4. Step 4: Simplify right side
    247,223.28x = 47,698,682,745.66
  5. Step 5: Solve for x
    x = 47,698,682,745.66/247,223.28
  6. Step 6: Final answer
    x = 192,937.67

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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.