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Finding the Fourth Proportional to 279,740.49, 419,202.49 and 139,305.93

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Solution

The fourth proportional to 279,740.49, 419,202.49 and 139,305.93 is: 208,755.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,740.49 : 419,202.49 = 139,305.93 : x
  2. Step 2: Convert to fraction form
    279,740.49/419,202.49 = 139,305.93/x
  3. Step 3: Cross multiply
    279,740.49x = 419,202.49 × 139,305.93
  4. Step 4: Simplify right side
    279,740.49x = 58,397,392,727.77
  5. Step 5: Solve for x
    x = 58,397,392,727.77/279,740.49
  6. Step 6: Final answer
    x = 208,755.60

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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.