Home / 383,890.87-529,939.29-247,991.05

Finding the Fourth Proportional to 383,890.87, 529,939.29 and 247,991.05

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Solution

The fourth proportional to 383,890.87, 529,939.29 and 247,991.05 is: 342,337.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,890.87 : 529,939.29 = 247,991.05 : x
  2. Step 2: Convert to fraction form
    383,890.87/529,939.29 = 247,991.05/x
  3. Step 3: Cross multiply
    383,890.87x = 529,939.29 × 247,991.05
  4. Step 4: Simplify right side
    383,890.87x = 131,420,200,963.36
  5. Step 5: Solve for x
    x = 131,420,200,963.36/383,890.87
  6. Step 6: Final answer
    x = 342,337.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.