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Finding the Fourth Proportional to 547,462.65, 755,490.99 and 305,749.47

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Solution

The fourth proportional to 547,462.65, 755,490.99 and 305,749.47 is: 421,930.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,462.65 : 755,490.99 = 305,749.47 : x
  2. Step 2: Convert to fraction form
    547,462.65/755,490.99 = 305,749.47/x
  3. Step 3: Cross multiply
    547,462.65x = 755,490.99 × 305,749.47
  4. Step 4: Simplify right side
    547,462.65x = 230,990,969,782.28
  5. Step 5: Solve for x
    x = 230,990,969,782.28/547,462.65
  6. Step 6: Final answer
    x = 421,930.10

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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.