Home / 378,932.28-522,926.58-209,166.42

Finding the Fourth Proportional to 378,932.28, 522,926.58 and 209,166.42

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Solution

The fourth proportional to 378,932.28, 522,926.58 and 209,166.42 is: 288,649.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,932.28 : 522,926.58 = 209,166.42 : x
  2. Step 2: Convert to fraction form
    378,932.28/522,926.58 = 209,166.42/x
  3. Step 3: Cross multiply
    378,932.28x = 522,926.58 × 209,166.42
  4. Step 4: Simplify right side
    378,932.28x = 109,378,680,661.44
  5. Step 5: Solve for x
    x = 109,378,680,661.44/378,932.28
  6. Step 6: Final answer
    x = 288,649.68

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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.