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Finding the Fourth Proportional to 362,221.60, 543,405.30 and 125,515.30

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Solution

The fourth proportional to 362,221.60, 543,405.30 and 125,515.30 is: 188,298.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,221.60 : 543,405.30 = 125,515.30 : x
  2. Step 2: Convert to fraction form
    362,221.60/543,405.30 = 125,515.30/x
  3. Step 3: Cross multiply
    362,221.60x = 543,405.30 × 125,515.30
  4. Step 4: Simplify right side
    362,221.60x = 68,205,679,251.09
  5. Step 5: Solve for x
    x = 68,205,679,251.09/362,221.60
  6. Step 6: Final answer
    x = 188,298.21

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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.