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Finding the Fourth Proportional to 308,407.72, 425,720.10 and 201,003.88

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Solution

The fourth proportional to 308,407.72, 425,720.10 and 201,003.88 is: 277,461.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,407.72 : 425,720.10 = 201,003.88 : x
  2. Step 2: Convert to fraction form
    308,407.72/425,720.10 = 201,003.88/x
  3. Step 3: Cross multiply
    308,407.72x = 425,720.10 × 201,003.88
  4. Step 4: Simplify right side
    308,407.72x = 85,571,391,893.99
  5. Step 5: Solve for x
    x = 85,571,391,893.99/308,407.72
  6. Step 6: Final answer
    x = 277,461.90

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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.