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Finding the Third Proportional to 145,153 and 311,042

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Solution

The third proportional to 145,153 and 311,042 is: 666,518.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,153 : 311,042 = 311,042 : x
  2. Step 2: Convert to fraction form
    145,153/311,042 = 311,042/x
  3. Step 3: Cross multiply
    145,153x = 311,042 × 311,042
  4. Step 4: Simplify right side
    145,153x = 96,747,125,764
  5. Step 5: Solve for x
    x = 96,747,125,764/145,153
  6. Step 6: Final answer
    x = 666,518.27

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.