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Finding the Fourth Proportional to 352,317.75, 528,472.01 and 86,080.57

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Solution

The fourth proportional to 352,317.75, 528,472.01 and 86,080.57 is: 129,119.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,317.75 : 528,472.01 = 86,080.57 : x
  2. Step 2: Convert to fraction form
    352,317.75/528,472.01 = 86,080.57/x
  3. Step 3: Cross multiply
    352,317.75x = 528,472.01 × 86,080.57
  4. Step 4: Simplify right side
    352,317.75x = 45,491,171,849.85
  5. Step 5: Solve for x
    x = 45,491,171,849.85/352,317.75
  6. Step 6: Final answer
    x = 129,119.73

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1.5x scale

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.