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Finding the Fourth Proportional to 324,705.60, 446,373.12 and 279,216.96

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Solution

The fourth proportional to 324,705.60, 446,373.12 and 279,216.96 is: 383,839.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,705.60 : 446,373.12 = 279,216.96 : x
  2. Step 2: Convert to fraction form
    324,705.60/446,373.12 = 279,216.96/x
  3. Step 3: Cross multiply
    324,705.60x = 446,373.12 × 279,216.96
  4. Step 4: Simplify right side
    324,705.60x = 124,634,945,592.12
  5. Step 5: Solve for x
    x = 124,634,945,592.12/324,705.60
  6. Step 6: Final answer
    x = 383,839.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.