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Finding the Fourth Proportional to 308,074.44, 425,129.40 and 172,107.84

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Solution

The fourth proportional to 308,074.44, 425,129.40 and 172,107.84 is: 237,501.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,074.44 : 425,129.40 = 172,107.84 : x
  2. Step 2: Convert to fraction form
    308,074.44/425,129.40 = 172,107.84/x
  3. Step 3: Cross multiply
    308,074.44x = 425,129.40 × 172,107.84
  4. Step 4: Simplify right side
    308,074.44x = 73,168,102,754.50
  5. Step 5: Solve for x
    x = 73,168,102,754.50/308,074.44
  6. Step 6: Final answer
    x = 237,501.37

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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.