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Finding the Fourth Proportional to 279,848.34, 419,772.39 and 69,486.28

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Solution

The fourth proportional to 279,848.34, 419,772.39 and 69,486.28 is: 104,229.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,848.34 : 419,772.39 = 69,486.28 : x
  2. Step 2: Convert to fraction form
    279,848.34/419,772.39 = 69,486.28/x
  3. Step 3: Cross multiply
    279,848.34x = 419,772.39 × 69,486.28
  4. Step 4: Simplify right side
    279,848.34x = 29,168,419,728.95
  5. Step 5: Solve for x
    x = 29,168,419,728.95/279,848.34
  6. Step 6: Final answer
    x = 104,229.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.