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Finding the Fourth Proportional to 547,270.29, 755,225.64 and 305,556.57

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Solution

The fourth proportional to 547,270.29, 755,225.64 and 305,556.57 is: 421,663.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,270.29 : 755,225.64 = 305,556.57 : x
  2. Step 2: Convert to fraction form
    547,270.29/755,225.64 = 305,556.57/x
  3. Step 3: Cross multiply
    547,270.29x = 755,225.64 × 305,556.57
  4. Step 4: Simplify right side
    547,270.29x = 230,764,156,134.46
  5. Step 5: Solve for x
    x = 230,764,156,134.46/547,270.29
  6. Step 6: Final answer
    x = 421,663.96

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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.