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Finding the Fourth Proportional to 307,881.73, 425,170.25 and 291,108.35

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Solution

The fourth proportional to 307,881.73, 425,170.25 and 291,108.35 is: 402,007.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,881.73 : 425,170.25 = 291,108.35 : x
  2. Step 2: Convert to fraction form
    307,881.73/425,170.25 = 291,108.35/x
  3. Step 3: Cross multiply
    307,881.73x = 425,170.25 × 291,108.35
  4. Step 4: Simplify right side
    307,881.73x = 123,770,609,553.97
  5. Step 5: Solve for x
    x = 123,770,609,553.97/307,881.73
  6. Step 6: Final answer
    x = 402,007.00

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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.