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Finding the Fourth Proportional to 362,428.78, 543,835.14 and 263,406.28

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Solution

The fourth proportional to 362,428.78, 543,835.14 and 263,406.28 is: 395,248.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,428.78 : 543,835.14 = 263,406.28 : x
  2. Step 2: Convert to fraction form
    362,428.78/543,835.14 = 263,406.28/x
  3. Step 3: Cross multiply
    362,428.78x = 543,835.14 × 263,406.28
  4. Step 4: Simplify right side
    362,428.78x = 143,249,591,160.68
  5. Step 5: Solve for x
    x = 143,249,591,160.68/362,428.78
  6. Step 6: Final answer
    x = 395,248.94

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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.