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Finding the Third Proportional to 248,964 and 388,992

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Solution

The third proportional to 248,964 and 388,992 is: 607,777.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,964 : 388,992 = 388,992 : x
  2. Step 2: Convert to fraction form
    248,964/388,992 = 388,992/x
  3. Step 3: Cross multiply
    248,964x = 388,992 × 388,992
  4. Step 4: Simplify right side
    248,964x = 151,314,776,064
  5. Step 5: Solve for x
    x = 151,314,776,064/248,964
  6. Step 6: Final answer
    x = 607,777.74

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.