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Finding the Fourth Proportional to 217,747.78, 300,484.23 and 122,258.50

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Solution

The fourth proportional to 217,747.78, 300,484.23 and 122,258.50 is: 168,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,747.78 : 300,484.23 = 122,258.50 : x
  2. Step 2: Convert to fraction form
    217,747.78/300,484.23 = 122,258.50/x
  3. Step 3: Cross multiply
    217,747.78x = 300,484.23 × 122,258.50
  4. Step 4: Simplify right side
    217,747.78x = 36,736,751,233.46
  5. Step 5: Solve for x
    x = 36,736,751,233.46/217,747.78
  6. Step 6: Final answer
    x = 168,712.40

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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.