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Finding the Fourth Proportional to 362,415.20, 543,622.80 and 125,679.20

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Solution

The fourth proportional to 362,415.20, 543,622.80 and 125,679.20 is: 188,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,415.20 : 543,622.80 = 125,679.20 : x
  2. Step 2: Convert to fraction form
    362,415.20/543,622.80 = 125,679.20/x
  3. Step 3: Cross multiply
    362,415.20x = 543,622.80 × 125,679.20
  4. Step 4: Simplify right side
    362,415.20x = 68,322,078,605.76
  5. Step 5: Solve for x
    x = 68,322,078,605.76/362,415.20
  6. Step 6: Final answer
    x = 188,518.80

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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.