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Finding the Fourth Proportional to 478,563.28, 660,446.82 and 263,703.31

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Solution

The fourth proportional to 478,563.28, 660,446.82 and 263,703.31 is: 363,926.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,563.28 : 660,446.82 = 263,703.31 : x
  2. Step 2: Convert to fraction form
    478,563.28/660,446.82 = 263,703.31/x
  3. Step 3: Cross multiply
    478,563.28x = 660,446.82 × 263,703.31
  4. Step 4: Simplify right side
    478,563.28x = 174,162,012,512.97
  5. Step 5: Solve for x
    x = 174,162,012,512.97/478,563.28
  6. Step 6: Final answer
    x = 363,926.82

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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.