Home / 356,049.81-491,336.42-203,137.50

Finding the Fourth Proportional to 356,049.81, 491,336.42 and 203,137.50

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Solution

The fourth proportional to 356,049.81, 491,336.42 and 203,137.50 is: 280,322.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,049.81 : 491,336.42 = 203,137.50 : x
  2. Step 2: Convert to fraction form
    356,049.81/491,336.42 = 203,137.50/x
  3. Step 3: Cross multiply
    356,049.81x = 491,336.42 × 203,137.50
  4. Step 4: Simplify right side
    356,049.81x = 99,808,851,002.06
  5. Step 5: Solve for x
    x = 99,808,851,002.06/356,049.81
  6. Step 6: Final answer
    x = 280,322.72

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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.