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Finding the Fourth Proportional to 354,455.92, 531,224.61 and 143,979.04

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Solution

The fourth proportional to 354,455.92, 531,224.61 and 143,979.04 is: 215,782.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,455.92 : 531,224.61 = 143,979.04 : x
  2. Step 2: Convert to fraction form
    354,455.92/531,224.61 = 143,979.04/x
  3. Step 3: Cross multiply
    354,455.92x = 531,224.61 × 143,979.04
  4. Step 4: Simplify right side
    354,455.92x = 76,485,209,372.17
  5. Step 5: Solve for x
    x = 76,485,209,372.17/354,455.92
  6. Step 6: Final answer
    x = 215,782.01

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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.