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Finding the Fourth Proportional to 362,429.80, 543,126.30 and 266,914.60

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Solution

The fourth proportional to 362,429.80, 543,126.30 and 266,914.60 is: 399,990.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,429.80 : 543,126.30 = 266,914.60 : x
  2. Step 2: Convert to fraction form
    362,429.80/543,126.30 = 266,914.60/x
  3. Step 3: Cross multiply
    362,429.80x = 543,126.30 × 266,914.60
  4. Step 4: Simplify right side
    362,429.80x = 144,968,339,113.98
  5. Step 5: Solve for x
    x = 144,968,339,113.98/362,429.80
  6. Step 6: Final answer
    x = 399,990.12

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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.