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Finding the Third Proportional to 342,539.25 and 478,889.25

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Solution

The third proportional to 342,539.25 and 478,889.25 is: 669,514.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,539.25 : 478,889.25 = 478,889.25 : x
  2. Step 2: Convert to fraction form
    342,539.25/478,889.25 = 478,889.25/x
  3. Step 3: Cross multiply
    342,539.25x = 478,889.25 × 478,889.25
  4. Step 4: Simplify right side
    342,539.25x = 229,334,913,765.56
  5. Step 5: Solve for x
    x = 229,334,913,765.56/342,539.25
  6. Step 6: Final answer
    x = 669,514.26

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.