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Finding the Fourth Proportional to 308,538.60, 425,786.40 and 181,216.32

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Solution

The fourth proportional to 308,538.60, 425,786.40 and 181,216.32 is: 250,080.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,538.60 : 425,786.40 = 181,216.32 : x
  2. Step 2: Convert to fraction form
    308,538.60/425,786.40 = 181,216.32/x
  3. Step 3: Cross multiply
    308,538.60x = 425,786.40 × 181,216.32
  4. Step 4: Simplify right side
    308,538.60x = 77,159,444,514.05
  5. Step 5: Solve for x
    x = 77,159,444,514.05/308,538.60
  6. Step 6: Final answer
    x = 250,080.36

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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.