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Finding the Fourth Proportional to 281,326.99, 388,412.31 and 251,060.32

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Solution

The fourth proportional to 281,326.99, 388,412.31 and 251,060.32 is: 346,624.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,326.99 : 388,412.31 = 251,060.32 : x
  2. Step 2: Convert to fraction form
    281,326.99/388,412.31 = 251,060.32/x
  3. Step 3: Cross multiply
    281,326.99x = 388,412.31 × 251,060.32
  4. Step 4: Simplify right side
    281,326.99x = 97,514,918,840.54
  5. Step 5: Solve for x
    x = 97,514,918,840.54/281,326.99
  6. Step 6: Final answer
    x = 346,624.83

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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.