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Finding the Fourth Proportional to 354,756.78, 531,939.96 and 242,563.68

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Solution

The fourth proportional to 354,756.78, 531,939.96 and 242,563.68 is: 363,712.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,756.78 : 531,939.96 = 242,563.68 : x
  2. Step 2: Convert to fraction form
    354,756.78/531,939.96 = 242,563.68/x
  3. Step 3: Cross multiply
    354,756.78x = 531,939.96 × 242,563.68
  4. Step 4: Simplify right side
    354,756.78x = 129,029,314,236.65
  5. Step 5: Solve for x
    x = 129,029,314,236.65/354,756.78
  6. Step 6: Final answer
    x = 363,712.05

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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.