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Finding the Fourth Proportional to 219,894.41, 303,486.85 and 139,329.43

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Solution

The fourth proportional to 219,894.41, 303,486.85 and 139,329.43 is: 192,295.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,894.41 : 303,486.85 = 139,329.43 : x
  2. Step 2: Convert to fraction form
    219,894.41/303,486.85 = 139,329.43/x
  3. Step 3: Cross multiply
    219,894.41x = 303,486.85 × 139,329.43
  4. Step 4: Simplify right side
    219,894.41x = 42,284,650,945.55
  5. Step 5: Solve for x
    x = 42,284,650,945.55/219,894.41
  6. Step 6: Final answer
    x = 192,295.25

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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.