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Finding the Fourth Proportional to 217,851.01, 300,662.59 and 122,357.71

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Solution

The fourth proportional to 217,851.01, 300,662.59 and 122,357.71 is: 168,869.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,851.01 : 300,662.59 = 122,357.71 : x
  2. Step 2: Convert to fraction form
    217,851.01/300,662.59 = 122,357.71/x
  3. Step 3: Cross multiply
    217,851.01x = 300,662.59 × 122,357.71
  4. Step 4: Simplify right side
    217,851.01x = 36,788,384,603.20
  5. Step 5: Solve for x
    x = 36,788,384,603.20/217,851.01
  6. Step 6: Final answer
    x = 168,869.47

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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.