Home / 392,913.40-589,629.30-143,595.40

Finding the Fourth Proportional to 392,913.40, 589,629.30 and 143,595.40

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Solution

The fourth proportional to 392,913.40, 589,629.30 and 143,595.40 is: 215,487.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,913.40 : 589,629.30 = 143,595.40 : x
  2. Step 2: Convert to fraction form
    392,913.40/589,629.30 = 143,595.40/x
  3. Step 3: Cross multiply
    392,913.40x = 589,629.30 × 143,595.40
  4. Step 4: Simplify right side
    392,913.40x = 84,668,055,185.22
  5. Step 5: Solve for x
    x = 84,668,055,185.22/392,913.40
  6. Step 6: Final answer
    x = 215,487.83

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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.