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Finding the Third Proportional to 223,458 and 312,574

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Solution

The third proportional to 223,458 and 312,574 is: 437,229.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,458 : 312,574 = 312,574 : x
  2. Step 2: Convert to fraction form
    223,458/312,574 = 312,574/x
  3. Step 3: Cross multiply
    223,458x = 312,574 × 312,574
  4. Step 4: Simplify right side
    223,458x = 97,702,505,476
  5. Step 5: Solve for x
    x = 97,702,505,476/223,458
  6. Step 6: Final answer
    x = 437,229.84

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.