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Finding the Fourth Proportional to 393,450.16, 590,765.64 and 225,160.52

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Solution

The fourth proportional to 393,450.16, 590,765.64 and 225,160.52 is: 338,078.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,450.16 : 590,765.64 = 225,160.52 : x
  2. Step 2: Convert to fraction form
    393,450.16/590,765.64 = 225,160.52/x
  3. Step 3: Cross multiply
    393,450.16x = 590,765.64 × 225,160.52
  4. Step 4: Simplify right side
    393,450.16x = 133,017,098,700.53
  5. Step 5: Solve for x
    x = 133,017,098,700.53/393,450.16
  6. Step 6: Final answer
    x = 338,078.65

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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.