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Finding the Fourth Proportional to 217,092.40, 299,578.83 and 121,594.21

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Solution

The fourth proportional to 217,092.40, 299,578.83 and 121,594.21 is: 167,795.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,092.40 : 299,578.83 = 121,594.21 : x
  2. Step 2: Convert to fraction form
    217,092.40/299,578.83 = 121,594.21/x
  3. Step 3: Cross multiply
    217,092.40x = 299,578.83 × 121,594.21
  4. Step 4: Simplify right side
    217,092.40x = 36,427,051,166.57
  5. Step 5: Solve for x
    x = 36,427,051,166.57/217,092.40
  6. Step 6: Final answer
    x = 167,795.15

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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.