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Finding the Fourth Proportional to 239,659.83, 359,489.87 and 81,889.83

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Solution

The fourth proportional to 239,659.83, 359,489.87 and 81,889.83 is: 122,834.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,659.83 : 359,489.87 = 81,889.83 : x
  2. Step 2: Convert to fraction form
    239,659.83/359,489.87 = 81,889.83/x
  3. Step 3: Cross multiply
    239,659.83x = 359,489.87 × 81,889.83
  4. Step 4: Simplify right side
    239,659.83x = 29,438,563,931.57
  5. Step 5: Solve for x
    x = 29,438,563,931.57/239,659.83
  6. Step 6: Final answer
    x = 122,834.79

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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.