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Finding the Fourth Proportional to 289,640.22, 434,460.67 and 121,068.31

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Solution

The fourth proportional to 289,640.22, 434,460.67 and 121,068.31 is: 181,602.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,640.22 : 434,460.67 = 121,068.31 : x
  2. Step 2: Convert to fraction form
    289,640.22/434,460.67 = 121,068.31/x
  3. Step 3: Cross multiply
    289,640.22x = 434,460.67 × 121,068.31
  4. Step 4: Simplify right side
    289,640.22x = 52,599,419,078.37
  5. Step 5: Solve for x
    x = 52,599,419,078.37/289,640.22
  6. Step 6: Final answer
    x = 181,602.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.