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Finding the Fourth Proportional to 217,374.47, 299,979.83 and 131,321.49

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Solution

The fourth proportional to 217,374.47, 299,979.83 and 131,321.49 is: 181,225.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,374.47 : 299,979.83 = 131,321.49 : x
  2. Step 2: Convert to fraction form
    217,374.47/299,979.83 = 131,321.49/x
  3. Step 3: Cross multiply
    217,374.47x = 299,979.83 × 131,321.49
  4. Step 4: Simplify right side
    217,374.47x = 39,393,797,448.93
  5. Step 5: Solve for x
    x = 39,393,797,448.93/217,374.47
  6. Step 6: Final answer
    x = 181,225.50

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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.