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Finding the Fourth Proportional to 478,563.36, 660,431.55 and 263,717.27

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Solution

The fourth proportional to 478,563.36, 660,431.55 and 263,717.27 is: 363,937.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,563.36 : 660,431.55 = 263,717.27 : x
  2. Step 2: Convert to fraction form
    478,563.36/660,431.55 = 263,717.27/x
  3. Step 3: Cross multiply
    478,563.36x = 660,431.55 × 263,717.27
  4. Step 4: Simplify right side
    478,563.36x = 174,167,204,809.56
  5. Step 5: Solve for x
    x = 174,167,204,809.56/478,563.36
  6. Step 6: Final answer
    x = 363,937.61

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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.