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Finding the Fourth Proportional to 221,795.52, 306,078.60 and 121,193.52

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Solution

The fourth proportional to 221,795.52, 306,078.60 and 121,193.52 is: 167,247.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,795.52 : 306,078.60 = 121,193.52 : x
  2. Step 2: Convert to fraction form
    221,795.52/306,078.60 = 121,193.52/x
  3. Step 3: Cross multiply
    221,795.52x = 306,078.60 × 121,193.52
  4. Step 4: Simplify right side
    221,795.52x = 37,094,742,930.67
  5. Step 5: Solve for x
    x = 37,094,742,930.67/221,795.52
  6. Step 6: Final answer
    x = 167,247.49

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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.