Home / 224,631.44-309,991.20-129,156.80

Finding the Fourth Proportional to 224,631.44, 309,991.20 and 129,156.80

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Solution

The fourth proportional to 224,631.44, 309,991.20 and 129,156.80 is: 178,236.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,631.44 : 309,991.20 = 129,156.80 : x
  2. Step 2: Convert to fraction form
    224,631.44/309,991.20 = 129,156.80/x
  3. Step 3: Cross multiply
    224,631.44x = 309,991.20 × 129,156.80
  4. Step 4: Simplify right side
    224,631.44x = 40,037,471,420.16
  5. Step 5: Solve for x
    x = 40,037,471,420.16/224,631.44
  6. Step 6: Final answer
    x = 178,236.28

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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.