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Finding the Fourth Proportional to 308,480.83, 425,725.23 and 172,527.42

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Solution

The fourth proportional to 308,480.83, 425,725.23 and 172,527.42 is: 238,099.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,480.83 : 425,725.23 = 172,527.42 : x
  2. Step 2: Convert to fraction form
    308,480.83/425,725.23 = 172,527.42/x
  3. Step 3: Cross multiply
    308,480.83x = 425,725.23 × 172,527.42
  4. Step 4: Simplify right side
    308,480.83x = 73,449,277,804.25
  5. Step 5: Solve for x
    x = 73,449,277,804.25/308,480.83
  6. Step 6: Final answer
    x = 238,099.98

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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.