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Finding the Fourth Proportional to 352,917, 529,141.44 and 128,250.74

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Solution

The fourth proportional to 352,917, 529,141.44 and 128,250.74 is: 192,291.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,917 : 529,141.44 = 128,250.74 : x
  2. Step 2: Convert to fraction form
    352,917/529,141.44 = 128,250.74/x
  3. Step 3: Cross multiply
    352,917x = 529,141.44 × 128,250.74
  4. Step 4: Simplify right side
    352,917x = 67,862,783,048.46
  5. Step 5: Solve for x
    x = 67,862,783,048.46/352,917
  6. Step 6: Final answer
    x = 192,291.06

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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.