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Finding the Third Proportional to 256,822.50 and 553,173

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Solution

The third proportional to 256,822.50 and 553,173 is: 1,191,485.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,822.50 : 553,173 = 553,173 : x
  2. Step 2: Convert to fraction form
    256,822.50/553,173 = 553,173/x
  3. Step 3: Cross multiply
    256,822.50x = 553,173 × 553,173
  4. Step 4: Simplify right side
    256,822.50x = 306,000,367,929
  5. Step 5: Solve for x
    x = 306,000,367,929/256,822.50
  6. Step 6: Final answer
    x = 1,191,485.82

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.