Home / 285,140.34-393,467.01-170,396.21

Finding the Fourth Proportional to 285,140.34, 393,467.01 and 170,396.21

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Solution

The fourth proportional to 285,140.34, 393,467.01 and 170,396.21 is: 235,130.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,140.34 : 393,467.01 = 170,396.21 : x
  2. Step 2: Convert to fraction form
    285,140.34/393,467.01 = 170,396.21/x
  3. Step 3: Cross multiply
    285,140.34x = 393,467.01 × 170,396.21
  4. Step 4: Simplify right side
    285,140.34x = 67,045,285,296.70
  5. Step 5: Solve for x
    x = 67,045,285,296.70/285,140.34
  6. Step 6: Final answer
    x = 235,130.83

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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.