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Finding the Fourth Proportional to 279,967.76, 386,234.04 and 177,938.64

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Solution

The fourth proportional to 279,967.76, 386,234.04 and 177,938.64 is: 245,478.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,967.76 : 386,234.04 = 177,938.64 : x
  2. Step 2: Convert to fraction form
    279,967.76/386,234.04 = 177,938.64/x
  3. Step 3: Cross multiply
    279,967.76x = 386,234.04 × 177,938.64
  4. Step 4: Simplify right side
    279,967.76x = 68,725,959,799.31
  5. Step 5: Solve for x
    x = 68,725,959,799.31/279,967.76
  6. Step 6: Final answer
    x = 245,478.12

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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.