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Finding the Fourth Proportional to 308,012.64, 425,052.84 and 172,049.04

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Solution

The fourth proportional to 308,012.64, 425,052.84 and 172,049.04 is: 237,425.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,012.64 : 425,052.84 = 172,049.04 : x
  2. Step 2: Convert to fraction form
    308,012.64/425,052.84 = 172,049.04/x
  3. Step 3: Cross multiply
    308,012.64x = 425,052.84 × 172,049.04
  4. Step 4: Simplify right side
    308,012.64x = 73,129,933,071.27
  5. Step 5: Solve for x
    x = 73,129,933,071.27/308,012.64
  6. Step 6: Final answer
    x = 237,425.10

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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.