Home / 285,915.41-394,562-163,405.75

Finding the Fourth Proportional to 285,915.41, 394,562 and 163,405.75

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Solution

The fourth proportional to 285,915.41, 394,562 and 163,405.75 is: 225,499.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,915.41 : 394,562 = 163,405.75 : x
  2. Step 2: Convert to fraction form
    285,915.41/394,562 = 163,405.75/x
  3. Step 3: Cross multiply
    285,915.41x = 394,562 × 163,405.75
  4. Step 4: Simplify right side
    285,915.41x = 64,473,697,558.69
  5. Step 5: Solve for x
    x = 64,473,697,558.69/285,915.41
  6. Step 6: Final answer
    x = 225,499.20

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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.