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Finding the Fourth Proportional to 393,977.92, 590,963.04 and 98,489.92

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Solution

The fourth proportional to 393,977.92, 590,963.04 and 98,489.92 is: 147,733.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,977.92 : 590,963.04 = 98,489.92 : x
  2. Step 2: Convert to fraction form
    393,977.92/590,963.04 = 98,489.92/x
  3. Step 3: Cross multiply
    393,977.92x = 590,963.04 × 98,489.92
  4. Step 4: Simplify right side
    393,977.92x = 58,203,902,532.56
  5. Step 5: Solve for x
    x = 58,203,902,532.56/393,977.92
  6. Step 6: Final answer
    x = 147,733.92

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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.