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Finding the Fourth Proportional to 548,913.13, 757,483.81 and 303,908.78

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Solution

The fourth proportional to 548,913.13, 757,483.81 and 303,908.78 is: 419,385.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,913.13 : 757,483.81 = 303,908.78 : x
  2. Step 2: Convert to fraction form
    548,913.13/757,483.81 = 303,908.78/x
  3. Step 3: Cross multiply
    548,913.13x = 757,483.81 × 303,908.78
  4. Step 4: Simplify right side
    548,913.13x = 230,205,980,566.85
  5. Step 5: Solve for x
    x = 230,205,980,566.85/548,913.13
  6. Step 6: Final answer
    x = 419,385.09

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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.