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Finding the Fourth Proportional to 219,717, 303,241.80 and 139,152

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Solution

The fourth proportional to 219,717, 303,241.80 and 139,152 is: 192,050.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,717 : 303,241.80 = 139,152 : x
  2. Step 2: Convert to fraction form
    219,717/303,241.80 = 139,152/x
  3. Step 3: Cross multiply
    219,717x = 303,241.80 × 139,152
  4. Step 4: Simplify right side
    219,717x = 42,196,702,953.60
  5. Step 5: Solve for x
    x = 42,196,702,953.60/219,717
  6. Step 6: Final answer
    x = 192,050.24

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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.