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Finding the Fourth Proportional to 547,502.73, 755,479.09 and 305,754.47

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Solution

The fourth proportional to 547,502.73, 755,479.09 and 305,754.47 is: 421,899.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,502.73 : 755,479.09 = 305,754.47 : x
  2. Step 2: Convert to fraction form
    547,502.73/755,479.09 = 305,754.47/x
  3. Step 3: Cross multiply
    547,502.73x = 755,479.09 × 305,754.47
  4. Step 4: Simplify right side
    547,502.73x = 230,991,108,759.03
  5. Step 5: Solve for x
    x = 230,991,108,759.03/547,502.73
  6. Step 6: Final answer
    x = 421,899.46

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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.