Home / 395,230.28-545,419.10-213,942.15

Finding the Fourth Proportional to 395,230.28, 545,419.10 and 213,942.15

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Solution

The fourth proportional to 395,230.28, 545,419.10 and 213,942.15 is: 295,240.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,230.28 : 545,419.10 = 213,942.15 : x
  2. Step 2: Convert to fraction form
    395,230.28/545,419.10 = 213,942.15/x
  3. Step 3: Cross multiply
    395,230.28x = 545,419.10 × 213,942.15
  4. Step 4: Simplify right side
    395,230.28x = 116,688,135,439.92
  5. Step 5: Solve for x
    x = 116,688,135,439.92/395,230.28
  6. Step 6: Final answer
    x = 295,240.88

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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.