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Finding the Fourth Proportional to 403,049.70, 556,208.46 and 221,757.84

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Solution

The fourth proportional to 403,049.70, 556,208.46 and 221,757.84 is: 306,025.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,049.70 : 556,208.46 = 221,757.84 : x
  2. Step 2: Convert to fraction form
    403,049.70/556,208.46 = 221,757.84/x
  3. Step 3: Cross multiply
    403,049.70x = 556,208.46 × 221,757.84
  4. Step 4: Simplify right side
    403,049.70x = 123,343,586,679.33
  5. Step 5: Solve for x
    x = 123,343,586,679.33/403,049.70
  6. Step 6: Final answer
    x = 306,025.75

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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.