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Finding the Third Proportional to 128,803.50 and 284,362.50

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Solution

The third proportional to 128,803.50 and 284,362.50 is: 627,793.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,803.50 : 284,362.50 = 284,362.50 : x
  2. Step 2: Convert to fraction form
    128,803.50/284,362.50 = 284,362.50/x
  3. Step 3: Cross multiply
    128,803.50x = 284,362.50 × 284,362.50
  4. Step 4: Simplify right side
    128,803.50x = 80,862,031,406.25
  5. Step 5: Solve for x
    x = 80,862,031,406.25/128,803.50
  6. Step 6: Final answer
    x = 627,793.74

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.