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Finding the Fourth Proportional to 217,857.91, 300,637.90 and 121,059.26

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Solution

The fourth proportional to 217,857.91, 300,637.90 and 121,059.26 is: 167,058.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,857.91 : 300,637.90 = 121,059.26 : x
  2. Step 2: Convert to fraction form
    217,857.91/300,637.90 = 121,059.26/x
  3. Step 3: Cross multiply
    217,857.91x = 300,637.90 × 121,059.26
  4. Step 4: Simplify right side
    217,857.91x = 36,395,002,004.60
  5. Step 5: Solve for x
    x = 36,395,002,004.60/217,857.91
  6. Step 6: Final answer
    x = 167,058.44

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1.5x scale

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.