Home / 393,540.04-543,085.32-223,784.56

Finding the Fourth Proportional to 393,540.04, 543,085.32 and 223,784.56

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Solution

The fourth proportional to 393,540.04, 543,085.32 and 223,784.56 is: 308,822.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,540.04 : 543,085.32 = 223,784.56 : x
  2. Step 2: Convert to fraction form
    393,540.04/543,085.32 = 223,784.56/x
  3. Step 3: Cross multiply
    393,540.04x = 543,085.32 × 223,784.56
  4. Step 4: Simplify right side
    393,540.04x = 121,534,109,378.66
  5. Step 5: Solve for x
    x = 121,534,109,378.66/393,540.04
  6. Step 6: Final answer
    x = 308,822.73

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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.