Home / 356,137.05-491,516.07-203,140.20

Finding the Fourth Proportional to 356,137.05, 491,516.07 and 203,140.20

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Solution

The fourth proportional to 356,137.05, 491,516.07 and 203,140.20 is: 280,360.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,137.05 : 491,516.07 = 203,140.20 : x
  2. Step 2: Convert to fraction form
    356,137.05/491,516.07 = 203,140.20/x
  3. Step 3: Cross multiply
    356,137.05x = 491,516.07 × 203,140.20
  4. Step 4: Simplify right side
    356,137.05x = 99,846,672,763.01
  5. Step 5: Solve for x
    x = 99,846,672,763.01/356,137.05
  6. Step 6: Final answer
    x = 280,360.25

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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.