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Finding the Third Proportional to 288,686 and 424,281

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Solution

The third proportional to 288,686 and 424,281 is: 623,564.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,686 : 424,281 = 424,281 : x
  2. Step 2: Convert to fraction form
    288,686/424,281 = 424,281/x
  3. Step 3: Cross multiply
    288,686x = 424,281 × 424,281
  4. Step 4: Simplify right side
    288,686x = 180,014,366,961
  5. Step 5: Solve for x
    x = 180,014,366,961/288,686
  6. Step 6: Final answer
    x = 623,564.59

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.