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Finding the Fourth Proportional to 303,616.69, 455,424.07 and 82,000.69

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Solution

The fourth proportional to 303,616.69, 455,424.07 and 82,000.69 is: 123,000.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,616.69 : 455,424.07 = 82,000.69 : x
  2. Step 2: Convert to fraction form
    303,616.69/455,424.07 = 82,000.69/x
  3. Step 3: Cross multiply
    303,616.69x = 455,424.07 × 82,000.69
  4. Step 4: Simplify right side
    303,616.69x = 37,345,087,982.61
  5. Step 5: Solve for x
    x = 37,345,087,982.61/303,616.69
  6. Step 6: Final answer
    x = 123,000.77

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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.