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Finding the Fourth Proportional to 383,439.48, 529,150.32 and 211,363.56

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Solution

The fourth proportional to 383,439.48, 529,150.32 and 211,363.56 is: 291,683.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,439.48 : 529,150.32 = 211,363.56 : x
  2. Step 2: Convert to fraction form
    383,439.48/529,150.32 = 211,363.56/x
  3. Step 3: Cross multiply
    383,439.48x = 529,150.32 × 211,363.56
  4. Step 4: Simplify right side
    383,439.48x = 111,843,095,410.34
  5. Step 5: Solve for x
    x = 111,843,095,410.34/383,439.48
  6. Step 6: Final answer
    x = 291,683.83

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1.5x scale

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.