Home / 285,140.40-393,467.09-170,396.28

Finding the Fourth Proportional to 285,140.40, 393,467.09 and 170,396.28

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Solution

The fourth proportional to 285,140.40, 393,467.09 and 170,396.28 is: 235,130.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,140.40 : 393,467.09 = 170,396.28 : x
  2. Step 2: Convert to fraction form
    285,140.40/393,467.09 = 170,396.28/x
  3. Step 3: Cross multiply
    285,140.40x = 393,467.09 × 170,396.28
  4. Step 4: Simplify right side
    285,140.40x = 67,045,326,471.09
  5. Step 5: Solve for x
    x = 67,045,326,471.09/285,140.40
  6. Step 6: Final answer
    x = 235,130.93

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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.