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Finding the Third Proportional to 301,390.88 and 409,315.78

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Solution

The third proportional to 301,390.88 and 409,315.78 is: 555,887.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,390.88 : 409,315.78 = 409,315.78 : x
  2. Step 2: Convert to fraction form
    301,390.88/409,315.78 = 409,315.78/x
  3. Step 3: Cross multiply
    301,390.88x = 409,315.78 × 409,315.78
  4. Step 4: Simplify right side
    301,390.88x = 167,539,408,780.30
  5. Step 5: Solve for x
    x = 167,539,408,780.30/301,390.88
  6. Step 6: Final answer
    x = 555,887.46

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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.