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Finding the Fourth Proportional to 528,195, 728,910.30 and 301,839.96

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Solution

The fourth proportional to 528,195, 728,910.30 and 301,839.96 is: 416,539.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,195 : 728,910.30 = 301,839.96 : x
  2. Step 2: Convert to fraction form
    528,195/728,910.30 = 301,839.96/x
  3. Step 3: Cross multiply
    528,195x = 728,910.30 × 301,839.96
  4. Step 4: Simplify right side
    528,195x = 220,014,255,795.59
  5. Step 5: Solve for x
    x = 220,014,255,795.59/528,195
  6. Step 6: Final answer
    x = 416,539.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.