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Finding the Third Proportional to 149,113 and 318,319

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Solution

The third proportional to 149,113 and 318,319 is: 679,531.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,113 : 318,319 = 318,319 : x
  2. Step 2: Convert to fraction form
    149,113/318,319 = 318,319/x
  3. Step 3: Cross multiply
    149,113x = 318,319 × 318,319
  4. Step 4: Simplify right side
    149,113x = 101,326,985,761
  5. Step 5: Solve for x
    x = 101,326,985,761/149,113
  6. Step 6: Final answer
    x = 679,531.53

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.