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Finding the Fourth Proportional to 355,009.08, 489,786.98 and 227,753.40

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Solution

The fourth proportional to 355,009.08, 489,786.98 and 227,753.40 is: 314,219.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,009.08 : 489,786.98 = 227,753.40 : x
  2. Step 2: Convert to fraction form
    355,009.08/489,786.98 = 227,753.40/x
  3. Step 3: Cross multiply
    355,009.08x = 489,786.98 × 227,753.40
  4. Step 4: Simplify right side
    355,009.08x = 111,550,649,970.73
  5. Step 5: Solve for x
    x = 111,550,649,970.73/355,009.08
  6. Step 6: Final answer
    x = 314,219.15

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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.