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Finding the Fourth Proportional to 547,108.80, 755,008.09 and 305,389.26

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Solution

The fourth proportional to 547,108.80, 755,008.09 and 305,389.26 is: 421,436.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,108.80 : 755,008.09 = 305,389.26 : x
  2. Step 2: Convert to fraction form
    547,108.80/755,008.09 = 305,389.26/x
  3. Step 3: Cross multiply
    547,108.80x = 755,008.09 × 305,389.26
  4. Step 4: Simplify right side
    547,108.80x = 230,571,361,899.11
  5. Step 5: Solve for x
    x = 230,571,361,899.11/547,108.80
  6. Step 6: Final answer
    x = 421,436.03

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1.5x scale

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.