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Finding the Fourth Proportional to 209,755.78, 314,352.39 and 114,843.02

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Solution

The fourth proportional to 209,755.78, 314,352.39 and 114,843.02 is: 172,110.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,755.78 : 314,352.39 = 114,843.02 : x
  2. Step 2: Convert to fraction form
    209,755.78/314,352.39 = 114,843.02/x
  3. Step 3: Cross multiply
    209,755.78x = 314,352.39 × 114,843.02
  4. Step 4: Simplify right side
    209,755.78x = 36,101,176,670.72
  5. Step 5: Solve for x
    x = 36,101,176,670.72/209,755.78
  6. Step 6: Final answer
    x = 172,110.52

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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.