Home / 393,056.25-542,419.43-223,299.69

Finding the Fourth Proportional to 393,056.25, 542,419.43 and 223,299.69

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Solution

The fourth proportional to 393,056.25, 542,419.43 and 223,299.69 is: 308,154.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,056.25 : 542,419.43 = 223,299.69 : x
  2. Step 2: Convert to fraction form
    393,056.25/542,419.43 = 223,299.69/x
  3. Step 3: Cross multiply
    393,056.25x = 542,419.43 × 223,299.69
  4. Step 4: Simplify right side
    393,056.25x = 121,122,090,568.98
  5. Step 5: Solve for x
    x = 121,122,090,568.98/393,056.25
  6. Step 6: Final answer
    x = 308,154.60

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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.