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Finding the Third Proportional to 302,870 and 470,312

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Solution

The third proportional to 302,870 and 470,312 is: 730,324.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,870 : 470,312 = 470,312 : x
  2. Step 2: Convert to fraction form
    302,870/470,312 = 470,312/x
  3. Step 3: Cross multiply
    302,870x = 470,312 × 470,312
  4. Step 4: Simplify right side
    302,870x = 221,193,377,344
  5. Step 5: Solve for x
    x = 221,193,377,344/302,870
  6. Step 6: Final answer
    x = 730,324.49

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.