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Finding the Third Proportional to 259,816.50 and 558,312

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Solution

The third proportional to 259,816.50 and 558,312 is: 1,199,740.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,816.50 : 558,312 = 558,312 : x
  2. Step 2: Convert to fraction form
    259,816.50/558,312 = 558,312/x
  3. Step 3: Cross multiply
    259,816.50x = 558,312 × 558,312
  4. Step 4: Simplify right side
    259,816.50x = 311,712,289,344
  5. Step 5: Solve for x
    x = 311,712,289,344/259,816.50
  6. Step 6: Final answer
    x = 1,199,740.16

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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.