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Finding the Fourth Proportional to 219,947.40, 303,530.94 and 119,345.40

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Solution

The fourth proportional to 219,947.40, 303,530.94 and 119,345.40 is: 164,698.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,947.40 : 303,530.94 = 119,345.40 : x
  2. Step 2: Convert to fraction form
    219,947.40/303,530.94 = 119,345.40/x
  3. Step 3: Cross multiply
    219,947.40x = 303,530.94 × 119,345.40
  4. Step 4: Simplify right side
    219,947.40x = 36,225,021,446.68
  5. Step 5: Solve for x
    x = 36,225,021,446.68/219,947.40
  6. Step 6: Final answer
    x = 164,698.57

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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.