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Finding the Fourth Proportional to 224,426.70, 309,704.31 and 128,930.94

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Solution

The fourth proportional to 224,426.70, 309,704.31 and 128,930.94 is: 177,922.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,426.70 : 309,704.31 = 128,930.94 : x
  2. Step 2: Convert to fraction form
    224,426.70/309,704.31 = 128,930.94/x
  3. Step 3: Cross multiply
    224,426.70x = 309,704.31 × 128,930.94
  4. Step 4: Simplify right side
    224,426.70x = 39,930,467,810.35
  5. Step 5: Solve for x
    x = 39,930,467,810.35/224,426.70
  6. Step 6: Final answer
    x = 177,922.09

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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.