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Finding the Fourth Proportional to 547,274.76, 755,231.82 and 305,561.04

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Solution

The fourth proportional to 547,274.76, 755,231.82 and 305,561.04 is: 421,670.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,274.76 : 755,231.82 = 305,561.04 : x
  2. Step 2: Convert to fraction form
    547,274.76/755,231.82 = 305,561.04/x
  3. Step 3: Cross multiply
    547,274.76x = 755,231.82 × 305,561.04
  4. Step 4: Simplify right side
    547,274.76x = 230,769,420,360.29
  5. Step 5: Solve for x
    x = 230,769,420,360.29/547,274.76
  6. Step 6: Final answer
    x = 421,670.13

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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.