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Finding the Fourth Proportional to 325,856.12, 489,048.24 and 168,129.68

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Solution

The fourth proportional to 325,856.12, 489,048.24 and 168,129.68 is: 252,330.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,856.12 : 489,048.24 = 168,129.68 : x
  2. Step 2: Convert to fraction form
    325,856.12/489,048.24 = 168,129.68/x
  3. Step 3: Cross multiply
    325,856.12x = 489,048.24 × 168,129.68
  4. Step 4: Simplify right side
    325,856.12x = 82,223,524,095.76
  5. Step 5: Solve for x
    x = 82,223,524,095.76/325,856.12
  6. Step 6: Final answer
    x = 252,330.77

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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.