Home / 393,056.37-542,419.61-223,299.81

Finding the Fourth Proportional to 393,056.37, 542,419.61 and 223,299.81

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Solution

The fourth proportional to 393,056.37, 542,419.61 and 223,299.81 is: 308,154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,056.37 : 542,419.61 = 223,299.81 : x
  2. Step 2: Convert to fraction form
    393,056.37/542,419.61 = 223,299.81/x
  3. Step 3: Cross multiply
    393,056.37x = 542,419.61 × 223,299.81
  4. Step 4: Simplify right side
    393,056.37x = 121,122,194,736.78
  5. Step 5: Solve for x
    x = 121,122,194,736.78/393,056.37
  6. Step 6: Final answer
    x = 308,154.77

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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.