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Finding the Fourth Proportional to 603,115.07, 832,365.21 and 345,015.80

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Solution

The fourth proportional to 603,115.07, 832,365.21 and 345,015.80 is: 476,159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,115.07 : 832,365.21 = 345,015.80 : x
  2. Step 2: Convert to fraction form
    603,115.07/832,365.21 = 345,015.80/x
  3. Step 3: Cross multiply
    603,115.07x = 832,365.21 × 345,015.80
  4. Step 4: Simplify right side
    603,115.07x = 287,179,153,755.73
  5. Step 5: Solve for x
    x = 287,179,153,755.73/603,115.07
  6. Step 6: Final answer
    x = 476,159.81

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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.