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Finding the Third Proportional to 264,321 and 409,438.50

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Solution

The third proportional to 264,321 and 409,438.50 is: 634,228.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,321 : 409,438.50 = 409,438.50 : x
  2. Step 2: Convert to fraction form
    264,321/409,438.50 = 409,438.50/x
  3. Step 3: Cross multiply
    264,321x = 409,438.50 × 409,438.50
  4. Step 4: Simplify right side
    264,321x = 167,639,885,282.25
  5. Step 5: Solve for x
    x = 167,639,885,282.25/264,321
  6. Step 6: Final answer
    x = 634,228.40

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.