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Finding the Fourth Proportional to 259,979.76, 389,969.72 and 93,767.76

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Solution

The fourth proportional to 259,979.76, 389,969.72 and 93,767.76 is: 140,651.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,979.76 : 389,969.72 = 93,767.76 : x
  2. Step 2: Convert to fraction form
    259,979.76/389,969.72 = 93,767.76/x
  3. Step 3: Cross multiply
    259,979.76x = 389,969.72 × 93,767.76
  4. Step 4: Simplify right side
    259,979.76x = 36,566,587,112.23
  5. Step 5: Solve for x
    x = 36,566,587,112.23/259,979.76
  6. Step 6: Final answer
    x = 140,651.67

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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.