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Finding the Fourth Proportional to 279,459.83, 419,254.82 and 79,782.95

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Solution

The fourth proportional to 279,459.83, 419,254.82 and 79,782.95 is: 119,693.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,459.83 : 419,254.82 = 79,782.95 : x
  2. Step 2: Convert to fraction form
    279,459.83/419,254.82 = 79,782.95/x
  3. Step 3: Cross multiply
    279,459.83x = 419,254.82 × 79,782.95
  4. Step 4: Simplify right side
    279,459.83x = 33,449,383,846.13
  5. Step 5: Solve for x
    x = 33,449,383,846.13/279,459.83
  6. Step 6: Final answer
    x = 119,693.00

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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.