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Finding the Fourth Proportional to 308,641.68, 425,942.08 and 172,667.52

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Solution

The fourth proportional to 308,641.68, 425,942.08 and 172,667.52 is: 238,290.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,641.68 : 425,942.08 = 172,667.52 : x
  2. Step 2: Convert to fraction form
    308,641.68/425,942.08 = 172,667.52/x
  3. Step 3: Cross multiply
    308,641.68x = 425,942.08 × 172,667.52
  4. Step 4: Simplify right side
    308,641.68x = 73,546,362,185.57
  5. Step 5: Solve for x
    x = 73,546,362,185.57/308,641.68
  6. Step 6: Final answer
    x = 238,290.44

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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.