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Finding the Third Proportional to 145,239 and 319,231.50

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Solution

The third proportional to 145,239 and 319,231.50 is: 701,662.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,239 : 319,231.50 = 319,231.50 : x
  2. Step 2: Convert to fraction form
    145,239/319,231.50 = 319,231.50/x
  3. Step 3: Cross multiply
    145,239x = 319,231.50 × 319,231.50
  4. Step 4: Simplify right side
    145,239x = 101,908,750,592.25
  5. Step 5: Solve for x
    x = 101,908,750,592.25/145,239
  6. Step 6: Final answer
    x = 701,662.44

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.