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Finding the Fourth Proportional to 279,915.84, 386,065.44 and 179,323.20

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Solution

The fourth proportional to 279,915.84, 386,065.44 and 179,323.20 is: 247,326.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,915.84 : 386,065.44 = 179,323.20 : x
  2. Step 2: Convert to fraction form
    279,915.84/386,065.44 = 179,323.20/x
  3. Step 3: Cross multiply
    279,915.84x = 386,065.44 × 179,323.20
  4. Step 4: Simplify right side
    279,915.84x = 69,230,490,110.21
  5. Step 5: Solve for x
    x = 69,230,490,110.21/279,915.84
  6. Step 6: Final answer
    x = 247,326.09

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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.