Home / 285,140.96-393,467.81-170,396.75

Finding the Fourth Proportional to 285,140.96, 393,467.81 and 170,396.75

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Solution

The fourth proportional to 285,140.96, 393,467.81 and 170,396.75 is: 235,131.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,140.96 : 393,467.81 = 170,396.75 : x
  2. Step 2: Convert to fraction form
    285,140.96/393,467.81 = 170,396.75/x
  3. Step 3: Cross multiply
    285,140.96x = 393,467.81 × 170,396.75
  4. Step 4: Simplify right side
    285,140.96x = 67,045,636,185.30
  5. Step 5: Solve for x
    x = 67,045,636,185.30/285,140.96
  6. Step 6: Final answer
    x = 235,131.56

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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.