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Finding the Third Proportional to 145,600 and 318,143

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Solution

The third proportional to 145,600 and 318,143 is: 695,157.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,600 : 318,143 = 318,143 : x
  2. Step 2: Convert to fraction form
    145,600/318,143 = 318,143/x
  3. Step 3: Cross multiply
    145,600x = 318,143 × 318,143
  4. Step 4: Simplify right side
    145,600x = 101,214,968,449
  5. Step 5: Solve for x
    x = 101,214,968,449/145,600
  6. Step 6: Final answer
    x = 695,157.75

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.