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Finding the Fourth Proportional to 256,503.80, 384,755.70 and 226,979.30

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Solution

The fourth proportional to 256,503.80, 384,755.70 and 226,979.30 is: 340,468.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,503.80 : 384,755.70 = 226,979.30 : x
  2. Step 2: Convert to fraction form
    256,503.80/384,755.70 = 226,979.30/x
  3. Step 3: Cross multiply
    256,503.80x = 384,755.70 × 226,979.30
  4. Step 4: Simplify right side
    256,503.80x = 87,331,579,457.01
  5. Step 5: Solve for x
    x = 87,331,579,457.01/256,503.80
  6. Step 6: Final answer
    x = 340,468.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.