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Finding the Fourth Proportional to 324,441.12, 486,495.54 and 172,724.39

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Solution

The fourth proportional to 324,441.12, 486,495.54 and 172,724.39 is: 258,998.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,441.12 : 486,495.54 = 172,724.39 : x
  2. Step 2: Convert to fraction form
    324,441.12/486,495.54 = 172,724.39/x
  3. Step 3: Cross multiply
    324,441.12x = 486,495.54 × 172,724.39
  4. Step 4: Simplify right side
    324,441.12x = 84,029,642,951.74
  5. Step 5: Solve for x
    x = 84,029,642,951.74/324,441.12
  6. Step 6: Final answer
    x = 258,998.13

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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.