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Finding the Fourth Proportional to 217,032.67, 299,505.41 and 121,539.39

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Solution

The fourth proportional to 217,032.67, 299,505.41 and 121,539.39 is: 167,724.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,032.67 : 299,505.41 = 121,539.39 : x
  2. Step 2: Convert to fraction form
    217,032.67/299,505.41 = 121,539.39/x
  3. Step 3: Cross multiply
    217,032.67x = 299,505.41 × 121,539.39
  4. Step 4: Simplify right side
    217,032.67x = 36,401,704,833.10
  5. Step 5: Solve for x
    x = 36,401,704,833.10/217,032.67
  6. Step 6: Final answer
    x = 167,724.54

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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.