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Finding the Fourth Proportional to 259,512.79, 389,130.44 and 133,101.45

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Solution

The fourth proportional to 259,512.79, 389,130.44 and 133,101.45 is: 199,581.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,512.79 : 389,130.44 = 133,101.45 : x
  2. Step 2: Convert to fraction form
    259,512.79/389,130.44 = 133,101.45/x
  3. Step 3: Cross multiply
    259,512.79x = 389,130.44 × 133,101.45
  4. Step 4: Simplify right side
    259,512.79x = 51,793,825,803.14
  5. Step 5: Solve for x
    x = 51,793,825,803.14/259,512.79
  6. Step 6: Final answer
    x = 199,581.01

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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.