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Finding the Fourth Proportional to 217,718.52, 300,448.92 and 122,222.76

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Solution

The fourth proportional to 217,718.52, 300,448.92 and 122,222.76 is: 168,665.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,718.52 : 300,448.92 = 122,222.76 : x
  2. Step 2: Convert to fraction form
    217,718.52/300,448.92 = 122,222.76/x
  3. Step 3: Cross multiply
    217,718.52x = 300,448.92 × 122,222.76
  4. Step 4: Simplify right side
    217,718.52x = 36,721,696,241.42
  5. Step 5: Solve for x
    x = 36,721,696,241.42/217,718.52
  6. Step 6: Final answer
    x = 168,665.93

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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.