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Finding the Fourth Proportional to 300,057.53, 414,118.55 and 172,738.49

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Solution

The fourth proportional to 300,057.53, 414,118.55 and 172,738.49 is: 238,401.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,057.53 : 414,118.55 = 172,738.49 : x
  2. Step 2: Convert to fraction form
    300,057.53/414,118.55 = 172,738.49/x
  3. Step 3: Cross multiply
    300,057.53x = 414,118.55 × 172,738.49
  4. Step 4: Simplify right side
    300,057.53x = 71,534,211,369.24
  5. Step 5: Solve for x
    x = 71,534,211,369.24/300,057.53
  6. Step 6: Final answer
    x = 238,401.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.