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Finding the Fourth Proportional to 285,771.48, 394,284.80 and 225,153.96

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Solution

The fourth proportional to 285,771.48, 394,284.80 and 225,153.96 is: 310,649.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,771.48 : 394,284.80 = 225,153.96 : x
  2. Step 2: Convert to fraction form
    285,771.48/394,284.80 = 225,153.96/x
  3. Step 3: Cross multiply
    285,771.48x = 394,284.80 × 225,153.96
  4. Step 4: Simplify right side
    285,771.48x = 88,774,784,087.81
  5. Step 5: Solve for x
    x = 88,774,784,087.81/285,771.48
  6. Step 6: Final answer
    x = 310,649.56

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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.