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Finding the Fourth Proportional to 219,558.14, 302,986.28 and 124,062.78

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Solution

The fourth proportional to 219,558.14, 302,986.28 and 124,062.78 is: 171,204.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,558.14 : 302,986.28 = 124,062.78 : x
  2. Step 2: Convert to fraction form
    219,558.14/302,986.28 = 124,062.78/x
  3. Step 3: Cross multiply
    219,558.14x = 302,986.28 × 124,062.78
  4. Step 4: Simplify right side
    219,558.14x = 37,589,320,198.66
  5. Step 5: Solve for x
    x = 37,589,320,198.66/219,558.14
  6. Step 6: Final answer
    x = 171,204.40

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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.