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Finding the Fourth Proportional to 217,476.44, 300,117.27 and 121,982.30

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Solution

The fourth proportional to 217,476.44, 300,117.27 and 121,982.30 is: 168,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,476.44 : 300,117.27 = 121,982.30 : x
  2. Step 2: Convert to fraction form
    217,476.44/300,117.27 = 121,982.30/x
  3. Step 3: Cross multiply
    217,476.44x = 300,117.27 × 121,982.30
  4. Step 4: Simplify right side
    217,476.44x = 36,608,994,864.32
  5. Step 5: Solve for x
    x = 36,608,994,864.32/217,476.44
  6. Step 6: Final answer
    x = 168,335.45

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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.