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Finding the Fourth Proportional to 200,423.46, 276,451.46 and 128,893.98

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Solution

The fourth proportional to 200,423.46, 276,451.46 and 128,893.98 is: 177,788.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,423.46 : 276,451.46 = 128,893.98 : x
  2. Step 2: Convert to fraction form
    200,423.46/276,451.46 = 128,893.98/x
  3. Step 3: Cross multiply
    200,423.46x = 276,451.46 × 128,893.98
  4. Step 4: Simplify right side
    200,423.46x = 35,632,928,956.21
  5. Step 5: Solve for x
    x = 35,632,928,956.21/200,423.46
  6. Step 6: Final answer
    x = 177,788.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.