Home / 325,864.20-489,233.70-208,057.80

Finding the Fourth Proportional to 325,864.20, 489,233.70 and 208,057.80

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Solution

The fourth proportional to 325,864.20, 489,233.70 and 208,057.80 is: 312,365.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,864.20 : 489,233.70 = 208,057.80 : x
  2. Step 2: Convert to fraction form
    325,864.20/489,233.70 = 208,057.80/x
  3. Step 3: Cross multiply
    325,864.20x = 489,233.70 × 208,057.80
  4. Step 4: Simplify right side
    325,864.20x = 101,788,887,307.86
  5. Step 5: Solve for x
    x = 101,788,887,307.86/325,864.20
  6. Step 6: Final answer
    x = 312,365.97

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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.