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Finding the Fourth Proportional to 200,579.70, 280,286.70 and 200,579.70

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Solution

The fourth proportional to 200,579.70, 280,286.70 and 200,579.70 is: 280,286.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,579.70 : 280,286.70 = 200,579.70 : x
  2. Step 2: Convert to fraction form
    200,579.70/280,286.70 = 200,579.70/x
  3. Step 3: Cross multiply
    200,579.70x = 280,286.70 × 200,579.70
  4. Step 4: Simplify right side
    200,579.70x = 56,219,822,199.99
  5. Step 5: Solve for x
    x = 56,219,822,199.99/200,579.70
  6. Step 6: Final answer
    x = 280,286.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.