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Finding the Fourth Proportional to 352,858.46, 529,290.42 and 86,621.28

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Solution

The fourth proportional to 352,858.46, 529,290.42 and 86,621.28 is: 129,932.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,858.46 : 529,290.42 = 86,621.28 : x
  2. Step 2: Convert to fraction form
    352,858.46/529,290.42 = 86,621.28/x
  3. Step 3: Cross multiply
    352,858.46x = 529,290.42 × 86,621.28
  4. Step 4: Simplify right side
    352,858.46x = 45,847,813,672.14
  5. Step 5: Solve for x
    x = 45,847,813,672.14/352,858.46
  6. Step 6: Final answer
    x = 129,932.59

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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.