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Finding the Fourth Proportional to 328,979.68, 453,992.16 and 185,740

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Solution

The fourth proportional to 328,979.68, 453,992.16 and 185,740 is: 256,321.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,979.68 : 453,992.16 = 185,740 : x
  2. Step 2: Convert to fraction form
    328,979.68/453,992.16 = 185,740/x
  3. Step 3: Cross multiply
    328,979.68x = 453,992.16 × 185,740
  4. Step 4: Simplify right side
    328,979.68x = 84,324,503,798.40
  5. Step 5: Solve for x
    x = 84,324,503,798.40/328,979.68
  6. Step 6: Final answer
    x = 256,321.31

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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.