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Finding the Fourth Proportional to 352,613.94, 528,917.24 and 86,375.84

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Solution

The fourth proportional to 352,613.94, 528,917.24 and 86,375.84 is: 129,562.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,613.94 : 528,917.24 = 86,375.84 : x
  2. Step 2: Convert to fraction form
    352,613.94/528,917.24 = 86,375.84/x
  3. Step 3: Cross multiply
    352,613.94x = 528,917.24 × 86,375.84
  4. Step 4: Simplify right side
    352,613.94x = 45,685,670,895.48
  5. Step 5: Solve for x
    x = 45,685,670,895.48/352,613.94
  6. Step 6: Final answer
    x = 129,562.86

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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.