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Finding the Fourth Proportional to 285,496.80, 394,179.12 and 255,185.52

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Solution

The fourth proportional to 285,496.80, 394,179.12 and 255,185.52 is: 352,329.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,496.80 : 394,179.12 = 255,185.52 : x
  2. Step 2: Convert to fraction form
    285,496.80/394,179.12 = 255,185.52/x
  3. Step 3: Cross multiply
    285,496.80x = 394,179.12 × 255,185.52
  4. Step 4: Simplify right side
    285,496.80x = 100,588,803,710.34
  5. Step 5: Solve for x
    x = 100,588,803,710.34/285,496.80
  6. Step 6: Final answer
    x = 352,329.01

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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.