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Finding the Third Proportional to 305,653.50 and 663,820.50

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Solution

The third proportional to 305,653.50 and 663,820.50 is: 1,441,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,653.50 : 663,820.50 = 663,820.50 : x
  2. Step 2: Convert to fraction form
    305,653.50/663,820.50 = 663,820.50/x
  3. Step 3: Cross multiply
    305,653.50x = 663,820.50 × 663,820.50
  4. Step 4: Simplify right side
    305,653.50x = 440,657,656,220.25
  5. Step 5: Solve for x
    x = 440,657,656,220.25/305,653.50
  6. Step 6: Final answer
    x = 1,441,690.20

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.