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Finding the Fourth Proportional to 303,433.62, 418,895.82 and 221,670.12

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Solution

The fourth proportional to 303,433.62, 418,895.82 and 221,670.12 is: 306,019.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,433.62 : 418,895.82 = 221,670.12 : x
  2. Step 2: Convert to fraction form
    303,433.62/418,895.82 = 221,670.12/x
  3. Step 3: Cross multiply
    303,433.62x = 418,895.82 × 221,670.12
  4. Step 4: Simplify right side
    303,433.62x = 92,856,686,686.90
  5. Step 5: Solve for x
    x = 92,856,686,686.90/303,433.62
  6. Step 6: Final answer
    x = 306,019.77

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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.