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Finding the Fourth Proportional to 224,249.70, 309,492.42 and 128,754.34

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Solution

The fourth proportional to 224,249.70, 309,492.42 and 128,754.34 is: 177,696.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,249.70 : 309,492.42 = 128,754.34 : x
  2. Step 2: Convert to fraction form
    224,249.70/309,492.42 = 128,754.34/x
  3. Step 3: Cross multiply
    224,249.70x = 309,492.42 × 128,754.34
  4. Step 4: Simplify right side
    224,249.70x = 39,848,492,272.10
  5. Step 5: Solve for x
    x = 39,848,492,272.10/224,249.70
  6. Step 6: Final answer
    x = 177,696.97

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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.