Home / 289,609.56-434,258.82-131,873.40

Finding the Fourth Proportional to 289,609.56, 434,258.82 and 131,873.40

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Solution

The fourth proportional to 289,609.56, 434,258.82 and 131,873.40 is: 197,739.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,609.56 : 434,258.82 = 131,873.40 : x
  2. Step 2: Convert to fraction form
    289,609.56/434,258.82 = 131,873.40/x
  3. Step 3: Cross multiply
    289,609.56x = 434,258.82 × 131,873.40
  4. Step 4: Simplify right side
    289,609.56x = 57,267,187,073.39
  5. Step 5: Solve for x
    x = 57,267,187,073.39/289,609.56
  6. Step 6: Final answer
    x = 197,739.28

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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.