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Finding the Fourth Proportional to 217,893.76, 300,646.76 and 127,208.56

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Solution

The fourth proportional to 217,893.76, 300,646.76 and 127,208.56 is: 175,520.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,893.76 : 300,646.76 = 127,208.56 : x
  2. Step 2: Convert to fraction form
    217,893.76/300,646.76 = 127,208.56/x
  3. Step 3: Cross multiply
    217,893.76x = 300,646.76 × 127,208.56
  4. Step 4: Simplify right side
    217,893.76x = 38,244,841,408.27
  5. Step 5: Solve for x
    x = 38,244,841,408.27/217,893.76
  6. Step 6: Final answer
    x = 175,520.59

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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.