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Finding the Fourth Proportional to 303,391.56, 418,503.59 and 194,457.09

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Solution

The fourth proportional to 303,391.56, 418,503.59 and 194,457.09 is: 268,237.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,391.56 : 418,503.59 = 194,457.09 : x
  2. Step 2: Convert to fraction form
    303,391.56/418,503.59 = 194,457.09/x
  3. Step 3: Cross multiply
    303,391.56x = 418,503.59 × 194,457.09
  4. Step 4: Simplify right side
    303,391.56x = 81,380,989,293.67
  5. Step 5: Solve for x
    x = 81,380,989,293.67/303,391.56
  6. Step 6: Final answer
    x = 268,237.49

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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.