Home / 356,049.12-491,335.47-203,136.81

Finding the Fourth Proportional to 356,049.12, 491,335.47 and 203,136.81

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Solution

The fourth proportional to 356,049.12, 491,335.47 and 203,136.81 is: 280,321.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,049.12 : 491,335.47 = 203,136.81 : x
  2. Step 2: Convert to fraction form
    356,049.12/491,335.47 = 203,136.81/x
  3. Step 3: Cross multiply
    356,049.12x = 491,335.47 × 203,136.81
  4. Step 4: Simplify right side
    356,049.12x = 99,808,319,868.06
  5. Step 5: Solve for x
    x = 99,808,319,868.06/356,049.12
  6. Step 6: Final answer
    x = 280,321.77

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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.