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Finding the Fourth Proportional to 362,981.80, 543,306.30 and 258,005.80

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Solution

The fourth proportional to 362,981.80, 543,306.30 and 258,005.80 is: 386,179.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,981.80 : 543,306.30 = 258,005.80 : x
  2. Step 2: Convert to fraction form
    362,981.80/543,306.30 = 258,005.80/x
  3. Step 3: Cross multiply
    362,981.80x = 543,306.30 × 258,005.80
  4. Step 4: Simplify right side
    362,981.80x = 140,176,176,576.54
  5. Step 5: Solve for x
    x = 140,176,176,576.54/362,981.80
  6. Step 6: Final answer
    x = 386,179.63

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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.