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Finding the Fourth Proportional to 279,620.92, 385,914.96 and 164,931.96

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Solution

The fourth proportional to 279,620.92, 385,914.96 and 164,931.96 is: 227,628.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,620.92 : 385,914.96 = 164,931.96 : x
  2. Step 2: Convert to fraction form
    279,620.92/385,914.96 = 164,931.96/x
  3. Step 3: Cross multiply
    279,620.92x = 385,914.96 × 164,931.96
  4. Step 4: Simplify right side
    279,620.92x = 63,649,710,746.12
  5. Step 5: Solve for x
    x = 63,649,710,746.12/279,620.92
  6. Step 6: Final answer
    x = 227,628.57

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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.