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Finding the Third Proportional to 155,217.75 and 279,604.50

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Solution

The third proportional to 155,217.75 and 279,604.50 is: 503,670.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,217.75 : 279,604.50 = 279,604.50 : x
  2. Step 2: Convert to fraction form
    155,217.75/279,604.50 = 279,604.50/x
  3. Step 3: Cross multiply
    155,217.75x = 279,604.50 × 279,604.50
  4. Step 4: Simplify right side
    155,217.75x = 78,178,676,420.25
  5. Step 5: Solve for x
    x = 78,178,676,420.25/155,217.75
  6. Step 6: Final answer
    x = 503,670.98

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Why These Related Problems?

These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.