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Finding the Fourth Proportional to 250,285.92, 375,460.20 and 81,823.20

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Solution

The fourth proportional to 250,285.92, 375,460.20 and 81,823.20 is: 122,745.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,285.92 : 375,460.20 = 81,823.20 : x
  2. Step 2: Convert to fraction form
    250,285.92/375,460.20 = 81,823.20/x
  3. Step 3: Cross multiply
    250,285.92x = 375,460.20 × 81,823.20
  4. Step 4: Simplify right side
    250,285.92x = 30,721,355,036.64
  5. Step 5: Solve for x
    x = 30,721,355,036.64/250,285.92
  6. Step 6: Final answer
    x = 122,745.04

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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.