Home / 307,942.38-462,059.78-213,318.18

Finding the Fourth Proportional to 307,942.38, 462,059.78 and 213,318.18

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Solution

The fourth proportional to 307,942.38, 462,059.78 and 213,318.18 is: 320,078.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,942.38 : 462,059.78 = 213,318.18 : x
  2. Step 2: Convert to fraction form
    307,942.38/462,059.78 = 213,318.18/x
  3. Step 3: Cross multiply
    307,942.38x = 462,059.78 × 213,318.18
  4. Step 4: Simplify right side
    307,942.38x = 98,565,750,254.21
  5. Step 5: Solve for x
    x = 98,565,750,254.21/307,942.38
  6. Step 6: Final answer
    x = 320,078.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.