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Finding the Fourth Proportional to 308,041.45, 425,093.88 and 172,089.03

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Solution

The fourth proportional to 308,041.45, 425,093.88 and 172,089.03 is: 237,481.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,041.45 : 425,093.88 = 172,089.03 : x
  2. Step 2: Convert to fraction form
    308,041.45/425,093.88 = 172,089.03/x
  3. Step 3: Cross multiply
    308,041.45x = 425,093.88 × 172,089.03
  4. Step 4: Simplify right side
    308,041.45x = 73,153,993,468.14
  5. Step 5: Solve for x
    x = 73,153,993,468.14/308,041.45
  6. Step 6: Final answer
    x = 237,481.01

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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.