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Finding the Fourth Proportional to 217,418.84, 299,910.90 and 136,718.60

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Solution

The fourth proportional to 217,418.84, 299,910.90 and 136,718.60 is: 188,591.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,418.84 : 299,910.90 = 136,718.60 : x
  2. Step 2: Convert to fraction form
    217,418.84/299,910.90 = 136,718.60/x
  3. Step 3: Cross multiply
    217,418.84x = 299,910.90 × 136,718.60
  4. Step 4: Simplify right side
    217,418.84x = 41,003,398,372.74
  5. Step 5: Solve for x
    x = 41,003,398,372.74/217,418.84
  6. Step 6: Final answer
    x = 188,591.74

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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.