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Finding the Fourth Proportional to 259,512.92, 389,130.63 and 133,101.58

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Solution

The fourth proportional to 259,512.92, 389,130.63 and 133,101.58 is: 199,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,512.92 : 389,130.63 = 133,101.58 : x
  2. Step 2: Convert to fraction form
    259,512.92/389,130.63 = 133,101.58/x
  3. Step 3: Cross multiply
    259,512.92x = 389,130.63 × 133,101.58
  4. Step 4: Simplify right side
    259,512.92x = 51,793,901,679.40
  5. Step 5: Solve for x
    x = 51,793,901,679.40/259,512.92
  6. Step 6: Final answer
    x = 199,581.21

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1.5x scale

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.