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Finding the Fourth Proportional to 362,890.80, 543,169.80 and 257,914.80

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Solution

The fourth proportional to 362,890.80, 543,169.80 and 257,914.80 is: 386,043.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,890.80 : 543,169.80 = 257,914.80 : x
  2. Step 2: Convert to fraction form
    362,890.80/543,169.80 = 257,914.80/x
  3. Step 3: Cross multiply
    362,890.80x = 543,169.80 × 257,914.80
  4. Step 4: Simplify right side
    362,890.80x = 140,091,530,333.04
  5. Step 5: Solve for x
    x = 140,091,530,333.04/362,890.80
  6. Step 6: Final answer
    x = 386,043.21

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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.