Home / 378,179.28-521,877.79-206,101.67

Finding the Fourth Proportional to 378,179.28, 521,877.79 and 206,101.67

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Solution

The fourth proportional to 378,179.28, 521,877.79 and 206,101.67 is: 284,415.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,179.28 : 521,877.79 = 206,101.67 : x
  2. Step 2: Convert to fraction form
    378,179.28/521,877.79 = 206,101.67/x
  3. Step 3: Cross multiply
    378,179.28x = 521,877.79 × 206,101.67
  4. Step 4: Simplify right side
    378,179.28x = 107,559,880,543.83
  5. Step 5: Solve for x
    x = 107,559,880,543.83/378,179.28
  6. Step 6: Final answer
    x = 284,415.05

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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.