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Finding the Fourth Proportional to 217,858.03, 300,638.08 and 121,059.39

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Solution

The fourth proportional to 217,858.03, 300,638.08 and 121,059.39 is: 167,058.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,858.03 : 300,638.08 = 121,059.39 : x
  2. Step 2: Convert to fraction form
    217,858.03/300,638.08 = 121,059.39/x
  3. Step 3: Cross multiply
    217,858.03x = 300,638.08 × 121,059.39
  4. Step 4: Simplify right side
    217,858.03x = 36,395,060,467.08
  5. Step 5: Solve for x
    x = 36,395,060,467.08/217,858.03
  6. Step 6: Final answer
    x = 167,058.61

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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.