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Finding the Fourth Proportional to 362,419.80, 543,111.30 and 266,904.60

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Solution

The fourth proportional to 362,419.80, 543,111.30 and 266,904.60 is: 399,975.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,419.80 : 543,111.30 = 266,904.60 : x
  2. Step 2: Convert to fraction form
    362,419.80/543,111.30 = 266,904.60/x
  3. Step 3: Cross multiply
    362,419.80x = 543,111.30 × 266,904.60
  4. Step 4: Simplify right side
    362,419.80x = 144,958,904,281.98
  5. Step 5: Solve for x
    x = 144,958,904,281.98/362,419.80
  6. Step 6: Final answer
    x = 399,975.12

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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.