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Finding the Fourth Proportional to 362,488.20, 543,805.20 and 303,730.80

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Solution

The fourth proportional to 362,488.20, 543,805.20 and 303,730.80 is: 455,657.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,488.20 : 543,805.20 = 303,730.80 : x
  2. Step 2: Convert to fraction form
    362,488.20/543,805.20 = 303,730.80/x
  3. Step 3: Cross multiply
    362,488.20x = 543,805.20 × 303,730.80
  4. Step 4: Simplify right side
    362,488.20x = 165,170,388,440.16
  5. Step 5: Solve for x
    x = 165,170,388,440.16/362,488.20
  6. Step 6: Final answer
    x = 455,657.28

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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.