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Finding the Fourth Proportional to 355,431.75, 533,230.98 and 243,164.79

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Solution

The fourth proportional to 355,431.75, 533,230.98 and 243,164.79 is: 364,804.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,431.75 : 533,230.98 = 243,164.79 : x
  2. Step 2: Convert to fraction form
    355,431.75/533,230.98 = 243,164.79/x
  3. Step 3: Cross multiply
    355,431.75x = 533,230.98 × 243,164.79
  4. Step 4: Simplify right side
    355,431.75x = 129,662,999,273.19
  5. Step 5: Solve for x
    x = 129,662,999,273.19/355,431.75
  6. Step 6: Final answer
    x = 364,804.21

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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.