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Finding the Third Proportional to 320,811 and 448,501.50

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Solution

The third proportional to 320,811 and 448,501.50 is: 627,015.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,811 : 448,501.50 = 448,501.50 : x
  2. Step 2: Convert to fraction form
    320,811/448,501.50 = 448,501.50/x
  3. Step 3: Cross multiply
    320,811x = 448,501.50 × 448,501.50
  4. Step 4: Simplify right side
    320,811x = 201,153,595,502.25
  5. Step 5: Solve for x
    x = 201,153,595,502.25/320,811
  6. Step 6: Final answer
    x = 627,015.89

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.