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Finding the Third Proportional to 145,101 and 221,820

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Solution

The third proportional to 145,101 and 221,820 is: 339,102.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,101 : 221,820 = 221,820 : x
  2. Step 2: Convert to fraction form
    145,101/221,820 = 221,820/x
  3. Step 3: Cross multiply
    145,101x = 221,820 × 221,820
  4. Step 4: Simplify right side
    145,101x = 49,204,112,400
  5. Step 5: Solve for x
    x = 49,204,112,400/145,101
  6. Step 6: Final answer
    x = 339,102.50

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.