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Finding the Third Proportional to 280,410.50 and 423,961.50

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Solution

The third proportional to 280,410.50 and 423,961.50 is: 641,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,410.50 : 423,961.50 = 423,961.50 : x
  2. Step 2: Convert to fraction form
    280,410.50/423,961.50 = 423,961.50/x
  3. Step 3: Cross multiply
    280,410.50x = 423,961.50 × 423,961.50
  4. Step 4: Simplify right side
    280,410.50x = 179,743,353,482.25
  5. Step 5: Solve for x
    x = 179,743,353,482.25/280,410.50
  6. Step 6: Final answer
    x = 641,000.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.