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Finding the Fourth Proportional to 422,007.15, 632,911.37 and 122,408.67

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Solution

The fourth proportional to 422,007.15, 632,911.37 and 122,408.67 is: 183,584.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,007.15 : 632,911.37 = 122,408.67 : x
  2. Step 2: Convert to fraction form
    422,007.15/632,911.37 = 122,408.67/x
  3. Step 3: Cross multiply
    422,007.15x = 632,911.37 × 122,408.67
  4. Step 4: Simplify right side
    422,007.15x = 77,473,838,417.53
  5. Step 5: Solve for x
    x = 77,473,838,417.53/422,007.15
  6. Step 6: Final answer
    x = 183,584.18

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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.