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Finding the Fourth Proportional to 259,491.52, 389,098.80 and 133,080.46

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Solution

The fourth proportional to 259,491.52, 389,098.80 and 133,080.46 is: 199,549.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,491.52 : 389,098.80 = 133,080.46 : x
  2. Step 2: Convert to fraction form
    259,491.52/389,098.80 = 133,080.46/x
  3. Step 3: Cross multiply
    259,491.52x = 389,098.80 × 133,080.46
  4. Step 4: Simplify right side
    259,491.52x = 51,781,447,289.45
  5. Step 5: Solve for x
    x = 51,781,447,289.45/259,491.52
  6. Step 6: Final answer
    x = 199,549.67

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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.