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Finding the Fourth Proportional to 279,636.70, 419,455.05 and 200,904.70

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Solution

The fourth proportional to 279,636.70, 419,455.05 and 200,904.70 is: 301,357.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,636.70 : 419,455.05 = 200,904.70 : x
  2. Step 2: Convert to fraction form
    279,636.70/419,455.05 = 200,904.70/x
  3. Step 3: Cross multiply
    279,636.70x = 419,455.05 × 200,904.70
  4. Step 4: Simplify right side
    279,636.70x = 84,270,490,983.74
  5. Step 5: Solve for x
    x = 84,270,490,983.74/279,636.70
  6. Step 6: Final answer
    x = 301,357.05

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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.