Home / 356,117.75-491,441.19-203,155.69

Finding the Fourth Proportional to 356,117.75, 491,441.19 and 203,155.69

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Solution

The fourth proportional to 356,117.75, 491,441.19 and 203,155.69 is: 280,354.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,117.75 : 491,441.19 = 203,155.69 : x
  2. Step 2: Convert to fraction form
    356,117.75/491,441.19 = 203,155.69/x
  3. Step 3: Cross multiply
    356,117.75x = 491,441.19 × 203,155.69
  4. Step 4: Simplify right side
    356,117.75x = 99,839,074,048.87
  5. Step 5: Solve for x
    x = 99,839,074,048.87/356,117.75
  6. Step 6: Final answer
    x = 280,354.11

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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.