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Finding the Third Proportional to 280,920 and 619,102.50

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Solution

The third proportional to 280,920 and 619,102.50 is: 1,364,402.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,920 : 619,102.50 = 619,102.50 : x
  2. Step 2: Convert to fraction form
    280,920/619,102.50 = 619,102.50/x
  3. Step 3: Cross multiply
    280,920x = 619,102.50 × 619,102.50
  4. Step 4: Simplify right side
    280,920x = 383,287,905,506.25
  5. Step 5: Solve for x
    x = 383,287,905,506.25/280,920
  6. Step 6: Final answer
    x = 1,364,402.34

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.