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Finding the Fourth Proportional to 354,505.20, 531,757.80 and 242,530.80

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Solution

The fourth proportional to 354,505.20, 531,757.80 and 242,530.80 is: 363,796.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,505.20 : 531,757.80 = 242,530.80 : x
  2. Step 2: Convert to fraction form
    354,505.20/531,757.80 = 242,530.80/x
  3. Step 3: Cross multiply
    354,505.20x = 531,757.80 × 242,530.80
  4. Step 4: Simplify right side
    354,505.20x = 128,967,644,640.24
  5. Step 5: Solve for x
    x = 128,967,644,640.24/354,505.20
  6. Step 6: Final answer
    x = 363,796.20

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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.