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Finding the Third Proportional to 147,578 and 221,513

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Solution

The third proportional to 147,578 and 221,513 is: 332,488.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,578 : 221,513 = 221,513 : x
  2. Step 2: Convert to fraction form
    147,578/221,513 = 221,513/x
  3. Step 3: Cross multiply
    147,578x = 221,513 × 221,513
  4. Step 4: Simplify right side
    147,578x = 49,068,009,169
  5. Step 5: Solve for x
    x = 49,068,009,169/147,578
  6. Step 6: Final answer
    x = 332,488.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.