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Finding the Third Proportional to 272,653.50 and 431,535

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Solution

The third proportional to 272,653.50 and 431,535 is: 683,000.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,653.50 : 431,535 = 431,535 : x
  2. Step 2: Convert to fraction form
    272,653.50/431,535 = 431,535/x
  3. Step 3: Cross multiply
    272,653.50x = 431,535 × 431,535
  4. Step 4: Simplify right side
    272,653.50x = 186,222,456,225
  5. Step 5: Solve for x
    x = 186,222,456,225/272,653.50
  6. Step 6: Final answer
    x = 683,000.42

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.