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Finding the Fourth Proportional to 208,788.53, 288,112.32 and 122,751.03

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Solution

The fourth proportional to 208,788.53, 288,112.32 and 122,751.03 is: 169,387.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,788.53 : 288,112.32 = 122,751.03 : x
  2. Step 2: Convert to fraction form
    208,788.53/288,112.32 = 122,751.03/x
  3. Step 3: Cross multiply
    208,788.53x = 288,112.32 × 122,751.03
  4. Step 4: Simplify right side
    208,788.53x = 35,366,084,035.69
  5. Step 5: Solve for x
    x = 35,366,084,035.69/208,788.53
  6. Step 6: Final answer
    x = 169,387.11

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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.