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Finding the Third Proportional to 318,303 and 432,549

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Solution

The third proportional to 318,303 and 432,549 is: 587,800.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,303 : 432,549 = 432,549 : x
  2. Step 2: Convert to fraction form
    318,303/432,549 = 432,549/x
  3. Step 3: Cross multiply
    318,303x = 432,549 × 432,549
  4. Step 4: Simplify right side
    318,303x = 187,098,637,401
  5. Step 5: Solve for x
    x = 187,098,637,401/318,303
  6. Step 6: Final answer
    x = 587,800.42

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.