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Finding the Third Proportional to 157,831.50 and 212,649

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Solution

The third proportional to 157,831.50 and 212,649 is: 286,505.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,831.50 : 212,649 = 212,649 : x
  2. Step 2: Convert to fraction form
    157,831.50/212,649 = 212,649/x
  3. Step 3: Cross multiply
    157,831.50x = 212,649 × 212,649
  4. Step 4: Simplify right side
    157,831.50x = 45,219,597,201
  5. Step 5: Solve for x
    x = 45,219,597,201/157,831.50
  6. Step 6: Final answer
    x = 286,505.53

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.