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Finding the Fourth Proportional to 547,651.13, 755,690.76 and 305,979.44

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Solution

The fourth proportional to 547,651.13, 755,690.76 and 305,979.44 is: 422,213.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,651.13 : 755,690.76 = 305,979.44 : x
  2. Step 2: Convert to fraction form
    547,651.13/755,690.76 = 305,979.44/x
  3. Step 3: Cross multiply
    547,651.13x = 755,690.76 × 305,979.44
  4. Step 4: Simplify right side
    547,651.13x = 231,225,831,779.52
  5. Step 5: Solve for x
    x = 231,225,831,779.52/547,651.13
  6. Step 6: Final answer
    x = 422,213.74

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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.