Home / 378,205.27-521,914.28-206,128.67

Finding the Fourth Proportional to 378,205.27, 521,914.28 and 206,128.67

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Solution

The fourth proportional to 378,205.27, 521,914.28 and 206,128.67 is: 284,452.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,205.27 : 521,914.28 = 206,128.67 : x
  2. Step 2: Convert to fraction form
    378,205.27/521,914.28 = 206,128.67/x
  3. Step 3: Cross multiply
    378,205.27x = 521,914.28 × 206,128.67
  4. Step 4: Simplify right side
    378,205.27x = 107,581,492,750.19
  5. Step 5: Solve for x
    x = 107,581,492,750.19/378,205.27
  6. Step 6: Final answer
    x = 284,452.66

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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.