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Finding the Third Proportional to 149,818 and 320,959

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Solution

The third proportional to 149,818 and 320,959 is: 687,598.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,818 : 320,959 = 320,959 : x
  2. Step 2: Convert to fraction form
    149,818/320,959 = 320,959/x
  3. Step 3: Cross multiply
    149,818x = 320,959 × 320,959
  4. Step 4: Simplify right side
    149,818x = 103,014,679,681
  5. Step 5: Solve for x
    x = 103,014,679,681/149,818
  6. Step 6: Final answer
    x = 687,598.82

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.