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Finding the Third Proportional to 315,031.50 and 505,350

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Solution

The third proportional to 315,031.50 and 505,350 is: 810,644.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,031.50 : 505,350 = 505,350 : x
  2. Step 2: Convert to fraction form
    315,031.50/505,350 = 505,350/x
  3. Step 3: Cross multiply
    315,031.50x = 505,350 × 505,350
  4. Step 4: Simplify right side
    315,031.50x = 255,378,622,500
  5. Step 5: Solve for x
    x = 255,378,622,500/315,031.50
  6. Step 6: Final answer
    x = 810,644.72

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.