Home / 428,933.79-642,982.32-204,233.85

Finding the Fourth Proportional to 428,933.79, 642,982.32 and 204,233.85

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Solution

The fourth proportional to 428,933.79, 642,982.32 and 204,233.85 is: 306,151.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,933.79 : 642,982.32 = 204,233.85 : x
  2. Step 2: Convert to fraction form
    428,933.79/642,982.32 = 204,233.85/x
  3. Step 3: Cross multiply
    428,933.79x = 642,982.32 × 204,233.85
  4. Step 4: Simplify right side
    428,933.79x = 131,318,754,695.53
  5. Step 5: Solve for x
    x = 131,318,754,695.53/428,933.79
  6. Step 6: Final answer
    x = 306,151.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.