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Finding the Fourth Proportional to 362,138.70, 543,208.05 and 268,826.70

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Solution

The fourth proportional to 362,138.70, 543,208.05 and 268,826.70 is: 403,240.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,138.70 : 543,208.05 = 268,826.70 : x
  2. Step 2: Convert to fraction form
    362,138.70/543,208.05 = 268,826.70/x
  3. Step 3: Cross multiply
    362,138.70x = 543,208.05 × 268,826.70
  4. Step 4: Simplify right side
    362,138.70x = 146,028,827,494.94
  5. Step 5: Solve for x
    x = 146,028,827,494.94/362,138.70
  6. Step 6: Final answer
    x = 403,240.05

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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.