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Finding the Fourth Proportional to 300,811.80, 415,108.12 and 179,881.80

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Solution

The fourth proportional to 300,811.80, 415,108.12 and 179,881.80 is: 248,229.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,811.80 : 415,108.12 = 179,881.80 : x
  2. Step 2: Convert to fraction form
    300,811.80/415,108.12 = 179,881.80/x
  3. Step 3: Cross multiply
    300,811.80x = 415,108.12 × 179,881.80
  4. Step 4: Simplify right side
    300,811.80x = 74,670,395,820.22
  5. Step 5: Solve for x
    x = 74,670,395,820.22/300,811.80
  6. Step 6: Final answer
    x = 248,229.61

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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.