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Finding the Fourth Proportional to 485,431.20, 669,813.84 and 270,524.32

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Solution

The fourth proportional to 485,431.20, 669,813.84 and 270,524.32 is: 373,278.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,431.20 : 669,813.84 = 270,524.32 : x
  2. Step 2: Convert to fraction form
    485,431.20/669,813.84 = 270,524.32/x
  3. Step 3: Cross multiply
    485,431.20x = 669,813.84 × 270,524.32
  4. Step 4: Simplify right side
    485,431.20x = 181,200,933,592.59
  5. Step 5: Solve for x
    x = 181,200,933,592.59/485,431.20
  6. Step 6: Final answer
    x = 373,278.30

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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.