Home / 389,236.05-536,668.56-320,083.92

Finding the Fourth Proportional to 389,236.05, 536,668.56 and 320,083.92

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Solution

The fourth proportional to 389,236.05, 536,668.56 and 320,083.92 is: 441,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,236.05 : 536,668.56 = 320,083.92 : x
  2. Step 2: Convert to fraction form
    389,236.05/536,668.56 = 320,083.92/x
  3. Step 3: Cross multiply
    389,236.05x = 536,668.56 × 320,083.92
  4. Step 4: Simplify right side
    389,236.05x = 171,778,976,425.56
  5. Step 5: Solve for x
    x = 171,778,976,425.56/389,236.05
  6. Step 6: Final answer
    x = 441,323.40

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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.