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Finding the Fourth Proportional to 308,512.53, 425,709.93 and 170,682.16

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Solution

The fourth proportional to 308,512.53, 425,709.93 and 170,682.16 is: 235,520.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,512.53 : 425,709.93 = 170,682.16 : x
  2. Step 2: Convert to fraction form
    308,512.53/425,709.93 = 170,682.16/x
  3. Step 3: Cross multiply
    308,512.53x = 425,709.93 × 170,682.16
  4. Step 4: Simplify right side
    308,512.53x = 72,661,089,383.21
  5. Step 5: Solve for x
    x = 72,661,089,383.21/308,512.53
  6. Step 6: Final answer
    x = 235,520.70

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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.