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Finding the Fourth Proportional to 362,410.80, 543,616.20 and 212,722.80

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Solution

The fourth proportional to 362,410.80, 543,616.20 and 212,722.80 is: 319,084.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,410.80 : 543,616.20 = 212,722.80 : x
  2. Step 2: Convert to fraction form
    362,410.80/543,616.20 = 212,722.80/x
  3. Step 3: Cross multiply
    362,410.80x = 543,616.20 × 212,722.80
  4. Step 4: Simplify right side
    362,410.80x = 115,639,560,189.36
  5. Step 5: Solve for x
    x = 115,639,560,189.36/362,410.80
  6. Step 6: Final answer
    x = 319,084.20

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1.5x scale

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.