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Finding the Fourth Proportional to 231,883.92, 320,007.72 and 129,913.68

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Solution

The fourth proportional to 231,883.92, 320,007.72 and 129,913.68 is: 179,285.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,883.92 : 320,007.72 = 129,913.68 : x
  2. Step 2: Convert to fraction form
    231,883.92/320,007.72 = 129,913.68/x
  3. Step 3: Cross multiply
    231,883.92x = 320,007.72 × 129,913.68
  4. Step 4: Simplify right side
    231,883.92x = 41,573,380,533.61
  5. Step 5: Solve for x
    x = 41,573,380,533.61/231,883.92
  6. Step 6: Final answer
    x = 179,285.31

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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.