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Finding the Fourth Proportional to 250,509.54, 375,749.55 and 82,139.70

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Solution

The fourth proportional to 250,509.54, 375,749.55 and 82,139.70 is: 123,204.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,509.54 : 375,749.55 = 82,139.70 : x
  2. Step 2: Convert to fraction form
    250,509.54/375,749.55 = 82,139.70/x
  3. Step 3: Cross multiply
    250,509.54x = 375,749.55 × 82,139.70
  4. Step 4: Simplify right side
    250,509.54x = 30,863,955,312.14
  5. Step 5: Solve for x
    x = 30,863,955,312.14/250,509.54
  6. Step 6: Final answer
    x = 123,204.71

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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.