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Finding the Third Proportional to 143,520 and 314,400

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Solution

The third proportional to 143,520 and 314,400 is: 688,735.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,520 : 314,400 = 314,400 : x
  2. Step 2: Convert to fraction form
    143,520/314,400 = 314,400/x
  3. Step 3: Cross multiply
    143,520x = 314,400 × 314,400
  4. Step 4: Simplify right side
    143,520x = 98,847,360,000
  5. Step 5: Solve for x
    x = 98,847,360,000/143,520
  6. Step 6: Final answer
    x = 688,735.79

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.