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Finding the Fourth Proportional to 548,678.52, 757,170.78 and 303,663.75

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Solution

The fourth proportional to 548,678.52, 757,170.78 and 303,663.75 is: 419,052.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,678.52 : 757,170.78 = 303,663.75 : x
  2. Step 2: Convert to fraction form
    548,678.52/757,170.78 = 303,663.75/x
  3. Step 3: Cross multiply
    548,678.52x = 757,170.78 × 303,663.75
  4. Step 4: Simplify right side
    548,678.52x = 229,925,322,267.13
  5. Step 5: Solve for x
    x = 229,925,322,267.13/548,678.52
  6. Step 6: Final answer
    x = 419,052.89

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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.