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Finding the Fourth Proportional to 279,818.39, 419,376.18 and 119,706.23

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Solution

The fourth proportional to 279,818.39, 419,376.18 and 119,706.23 is: 179,409.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,818.39 : 419,376.18 = 119,706.23 : x
  2. Step 2: Convert to fraction form
    279,818.39/419,376.18 = 119,706.23/x
  3. Step 3: Cross multiply
    279,818.39x = 419,376.18 × 119,706.23
  4. Step 4: Simplify right side
    279,818.39x = 50,201,941,459.60
  5. Step 5: Solve for x
    x = 50,201,941,459.60/279,818.39
  6. Step 6: Final answer
    x = 179,409.01

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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.