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Finding the Fourth Proportional to 213,393.15, 294,491.09 and 122,749.16

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Solution

The fourth proportional to 213,393.15, 294,491.09 and 122,749.16 is: 169,398.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,393.15 : 294,491.09 = 122,749.16 : x
  2. Step 2: Convert to fraction form
    213,393.15/294,491.09 = 122,749.16/x
  3. Step 3: Cross multiply
    213,393.15x = 294,491.09 × 122,749.16
  4. Step 4: Simplify right side
    213,393.15x = 36,148,532,759.40
  5. Step 5: Solve for x
    x = 36,148,532,759.40/213,393.15
  6. Step 6: Final answer
    x = 169,398.75

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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.