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Finding the Third Proportional to 145,399 and 213,298.50

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Solution

The third proportional to 145,399 and 213,298.50 is: 312,906.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,399 : 213,298.50 = 213,298.50 : x
  2. Step 2: Convert to fraction form
    145,399/213,298.50 = 213,298.50/x
  3. Step 3: Cross multiply
    145,399x = 213,298.50 × 213,298.50
  4. Step 4: Simplify right side
    145,399x = 45,496,250,102.25
  5. Step 5: Solve for x
    x = 45,496,250,102.25/145,399
  6. Step 6: Final answer
    x = 312,906.21

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These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.