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Finding the Fourth Proportional to 425,796.33, 637,971.48 and 256,961.91

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Solution

The fourth proportional to 425,796.33, 637,971.48 and 256,961.91 is: 385,006.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,796.33 : 637,971.48 = 256,961.91 : x
  2. Step 2: Convert to fraction form
    425,796.33/637,971.48 = 256,961.91/x
  3. Step 3: Cross multiply
    425,796.33x = 637,971.48 × 256,961.91
  4. Step 4: Simplify right side
    425,796.33x = 163,934,370,026.33
  5. Step 5: Solve for x
    x = 163,934,370,026.33/425,796.33
  6. Step 6: Final answer
    x = 385,006.54

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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.