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Finding the Fourth Proportional to 332,628.78, 459,028.16 and 189,388.88

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Solution

The fourth proportional to 332,628.78, 459,028.16 and 189,388.88 is: 261,356.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,628.78 : 459,028.16 = 189,388.88 : x
  2. Step 2: Convert to fraction form
    332,628.78/459,028.16 = 189,388.88/x
  3. Step 3: Cross multiply
    332,628.78x = 459,028.16 × 189,388.88
  4. Step 4: Simplify right side
    332,628.78x = 86,934,829,110.86
  5. Step 5: Solve for x
    x = 86,934,829,110.86/332,628.78
  6. Step 6: Final answer
    x = 261,356.91

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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.