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Finding the Fourth Proportional to 279,338.55, 385,528.71 and 164,580.51

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Solution

The fourth proportional to 279,338.55, 385,528.71 and 164,580.51 is: 227,145.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,338.55 : 385,528.71 = 164,580.51 : x
  2. Step 2: Convert to fraction form
    279,338.55/385,528.71 = 164,580.51/x
  3. Step 3: Cross multiply
    279,338.55x = 385,528.71 × 164,580.51
  4. Step 4: Simplify right side
    279,338.55x = 63,450,511,711.44
  5. Step 5: Solve for x
    x = 63,450,511,711.44/279,338.55
  6. Step 6: Final answer
    x = 227,145.56

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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.