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Finding the Fourth Proportional to 425,550.48, 638,256.60 and 200,910.48

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Solution

The fourth proportional to 425,550.48, 638,256.60 and 200,910.48 is: 301,333.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,550.48 : 638,256.60 = 200,910.48 : x
  2. Step 2: Convert to fraction form
    425,550.48/638,256.60 = 200,910.48/x
  3. Step 3: Cross multiply
    425,550.48x = 638,256.60 × 200,910.48
  4. Step 4: Simplify right side
    425,550.48x = 128,232,439,869.17
  5. Step 5: Solve for x
    x = 128,232,439,869.17/425,550.48
  6. Step 6: Final answer
    x = 301,333.09

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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.