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Finding the Fourth Proportional to 279,739.49, 419,200.99 and 139,304.93

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Solution

The fourth proportional to 279,739.49, 419,200.99 and 139,304.93 is: 208,754.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,739.49 : 419,200.99 = 139,304.93 : x
  2. Step 2: Convert to fraction form
    279,739.49/419,200.99 = 139,304.93/x
  3. Step 3: Cross multiply
    279,739.49x = 419,200.99 × 139,304.93
  4. Step 4: Simplify right side
    279,739.49x = 58,396,764,567.88
  5. Step 5: Solve for x
    x = 58,396,764,567.88/279,739.49
  6. Step 6: Final answer
    x = 208,754.10

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1.5x scale

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.