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Finding the Fourth Proportional to 217,256.80, 325,917.60 and 77,004.40

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Solution

The fourth proportional to 217,256.80, 325,917.60 and 77,004.40 is: 115,518.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,256.80 : 325,917.60 = 77,004.40 : x
  2. Step 2: Convert to fraction form
    217,256.80/325,917.60 = 77,004.40/x
  3. Step 3: Cross multiply
    217,256.80x = 325,917.60 × 77,004.40
  4. Step 4: Simplify right side
    217,256.80x = 25,097,089,237.44
  5. Step 5: Solve for x
    x = 25,097,089,237.44/217,256.80
  6. Step 6: Final answer
    x = 115,518.08

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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.