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Finding the Fourth Proportional to 352,909.72, 529,232.10 and 128,214.64

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Solution

The fourth proportional to 352,909.72, 529,232.10 and 128,214.64 is: 192,273.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,909.72 : 529,232.10 = 128,214.64 : x
  2. Step 2: Convert to fraction form
    352,909.72/529,232.10 = 128,214.64/x
  3. Step 3: Cross multiply
    352,909.72x = 529,232.10 × 128,214.64
  4. Step 4: Simplify right side
    352,909.72x = 67,855,303,177.94
  5. Step 5: Solve for x
    x = 67,855,303,177.94/352,909.72
  6. Step 6: Final answer
    x = 192,273.83

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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.