Home / 379,145.21-523,220.28-209,379.33

Finding the Fourth Proportional to 379,145.21, 523,220.28 and 209,379.33

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Solution

The fourth proportional to 379,145.21, 523,220.28 and 209,379.33 is: 288,943.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,145.21 : 523,220.28 = 209,379.33 : x
  2. Step 2: Convert to fraction form
    379,145.21/523,220.28 = 209,379.33/x
  3. Step 3: Cross multiply
    379,145.21x = 523,220.28 × 209,379.33
  4. Step 4: Simplify right side
    379,145.21x = 109,551,511,668.81
  5. Step 5: Solve for x
    x = 109,551,511,668.81/379,145.21
  6. Step 6: Final answer
    x = 288,943.42

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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.