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Finding the Fourth Proportional to 224,311.70, 309,471.98 and 143,783.63

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Solution

The fourth proportional to 224,311.70, 309,471.98 and 143,783.63 is: 198,371.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,311.70 : 309,471.98 = 143,783.63 : x
  2. Step 2: Convert to fraction form
    224,311.70/309,471.98 = 143,783.63/x
  3. Step 3: Cross multiply
    224,311.70x = 309,471.98 × 143,783.63
  4. Step 4: Simplify right side
    224,311.70x = 44,497,004,460.58
  5. Step 5: Solve for x
    x = 44,497,004,460.58/224,311.70
  6. Step 6: Final answer
    x = 198,371.30

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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.