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Finding the Fourth Proportional to 219,713.94, 303,237.59 and 139,148.96

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Solution

The fourth proportional to 219,713.94, 303,237.59 and 139,148.96 is: 192,046.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,713.94 : 303,237.59 = 139,148.96 : x
  2. Step 2: Convert to fraction form
    219,713.94/303,237.59 = 139,148.96/x
  3. Step 3: Cross multiply
    219,713.94x = 303,237.59 × 139,148.96
  4. Step 4: Simplify right side
    219,713.94x = 42,195,193,765.22
  5. Step 5: Solve for x
    x = 42,195,193,765.22/219,713.94
  6. Step 6: Final answer
    x = 192,046.05

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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.