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Finding the Fourth Proportional to 224,511.70, 309,879.33 and 129,073.84

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Solution

The fourth proportional to 224,511.70, 309,879.33 and 129,073.84 is: 178,152.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,511.70 : 309,879.33 = 129,073.84 : x
  2. Step 2: Convert to fraction form
    224,511.70/309,879.33 = 129,073.84/x
  3. Step 3: Cross multiply
    224,511.70x = 309,879.33 × 129,073.84
  4. Step 4: Simplify right side
    224,511.70x = 39,997,315,059.73
  5. Step 5: Solve for x
    x = 39,997,315,059.73/224,511.70
  6. Step 6: Final answer
    x = 178,152.48

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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.