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Finding the Fourth Proportional to 403,236.65, 556,462.17 and 221,944.67

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Solution

The fourth proportional to 403,236.65, 556,462.17 and 221,944.67 is: 306,281.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,236.65 : 556,462.17 = 221,944.67 : x
  2. Step 2: Convert to fraction form
    403,236.65/556,462.17 = 221,944.67/x
  3. Step 3: Cross multiply
    403,236.65x = 556,462.17 × 221,944.67
  4. Step 4: Simplify right side
    403,236.65x = 123,503,815,122.66
  5. Step 5: Solve for x
    x = 123,503,815,122.66/403,236.65
  6. Step 6: Final answer
    x = 306,281.23

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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.