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Finding the Fourth Proportional to 557,003.97, 768,664.82 and 302,355.16

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Solution

The fourth proportional to 557,003.97, 768,664.82 and 302,355.16 is: 417,249.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,003.97 : 768,664.82 = 302,355.16 : x
  2. Step 2: Convert to fraction form
    557,003.97/768,664.82 = 302,355.16/x
  3. Step 3: Cross multiply
    557,003.97x = 768,664.82 × 302,355.16
  4. Step 4: Simplify right side
    557,003.97x = 232,409,773,471.70
  5. Step 5: Solve for x
    x = 232,409,773,471.70/557,003.97
  6. Step 6: Final answer
    x = 417,249.76

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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.