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Finding the Third Proportional to 147,808 and 323,220

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Solution

The third proportional to 147,808 and 323,220 is: 706,803.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,808 : 323,220 = 323,220 : x
  2. Step 2: Convert to fraction form
    147,808/323,220 = 323,220/x
  3. Step 3: Cross multiply
    147,808x = 323,220 × 323,220
  4. Step 4: Simplify right side
    147,808x = 104,471,168,400
  5. Step 5: Solve for x
    x = 104,471,168,400/147,808
  6. Step 6: Final answer
    x = 706,803.21

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.