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Finding the Fourth Proportional to 217,007.78, 325,201.49 and 122,038.63

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Solution

The fourth proportional to 217,007.78, 325,201.49 and 122,038.63 is: 182,883.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,007.78 : 325,201.49 = 122,038.63 : x
  2. Step 2: Convert to fraction form
    217,007.78/325,201.49 = 122,038.63/x
  3. Step 3: Cross multiply
    217,007.78x = 325,201.49 × 122,038.63
  4. Step 4: Simplify right side
    217,007.78x = 39,687,144,313.56
  5. Step 5: Solve for x
    x = 39,687,144,313.56/217,007.78
  6. Step 6: Final answer
    x = 182,883.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.