Home / 393,768.27-543,365.16-219,325.12

Finding the Fourth Proportional to 393,768.27, 543,365.16 and 219,325.12

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Solution

The fourth proportional to 393,768.27, 543,365.16 and 219,325.12 is: 302,649.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,768.27 : 543,365.16 = 219,325.12 : x
  2. Step 2: Convert to fraction form
    393,768.27/543,365.16 = 219,325.12/x
  3. Step 3: Cross multiply
    393,768.27x = 543,365.16 × 219,325.12
  4. Step 4: Simplify right side
    393,768.27x = 119,173,627,973.64
  5. Step 5: Solve for x
    x = 119,173,627,973.64/393,768.27
  6. Step 6: Final answer
    x = 302,649.14

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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.