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Finding the Fourth Proportional to 354,320.64, 531,702.39 and 143,958.58

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Solution

The fourth proportional to 354,320.64, 531,702.39 and 143,958.58 is: 216,027.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,320.64 : 531,702.39 = 143,958.58 : x
  2. Step 2: Convert to fraction form
    354,320.64/531,702.39 = 143,958.58/x
  3. Step 3: Cross multiply
    354,320.64x = 531,702.39 × 143,958.58
  4. Step 4: Simplify right side
    354,320.64x = 76,543,120,257.59
  5. Step 5: Solve for x
    x = 76,543,120,257.59/354,320.64
  6. Step 6: Final answer
    x = 216,027.83

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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.