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Finding the Fourth Proportional to 547,995.89, 756,269.80 and 306,288.65

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Solution

The fourth proportional to 547,995.89, 756,269.80 and 306,288.65 is: 422,698.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,995.89 : 756,269.80 = 306,288.65 : x
  2. Step 2: Convert to fraction form
    547,995.89/756,269.80 = 306,288.65/x
  3. Step 3: Cross multiply
    547,995.89x = 756,269.80 × 306,288.65
  4. Step 4: Simplify right side
    547,995.89x = 231,636,857,202.72
  5. Step 5: Solve for x
    x = 231,636,857,202.72/547,995.89
  6. Step 6: Final answer
    x = 422,698.16

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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.