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Finding the Third Proportional to 215,833.50 and 319,558.50

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Solution

The third proportional to 215,833.50 and 319,558.50 is: 473,131.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,833.50 : 319,558.50 = 319,558.50 : x
  2. Step 2: Convert to fraction form
    215,833.50/319,558.50 = 319,558.50/x
  3. Step 3: Cross multiply
    215,833.50x = 319,558.50 × 319,558.50
  4. Step 4: Simplify right side
    215,833.50x = 102,117,634,922.25
  5. Step 5: Solve for x
    x = 102,117,634,922.25/215,833.50
  6. Step 6: Final answer
    x = 473,131.53

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.