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Finding the Third Proportional to 321,246 and 470,346

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Solution

The third proportional to 321,246 and 470,346 is: 688,647.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,246 : 470,346 = 470,346 : x
  2. Step 2: Convert to fraction form
    321,246/470,346 = 470,346/x
  3. Step 3: Cross multiply
    321,246x = 470,346 × 470,346
  4. Step 4: Simplify right side
    321,246x = 221,225,359,716
  5. Step 5: Solve for x
    x = 221,225,359,716/321,246
  6. Step 6: Final answer
    x = 688,647.83

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.