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Finding the Fourth Proportional to 547,382.18, 755,388.54 and 305,664.02

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Solution

The fourth proportional to 547,382.18, 755,388.54 and 305,664.02 is: 421,816.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,382.18 : 755,388.54 = 305,664.02 : x
  2. Step 2: Convert to fraction form
    547,382.18/755,388.54 = 305,664.02/x
  3. Step 3: Cross multiply
    547,382.18x = 755,388.54 × 305,664.02
  4. Step 4: Simplify right side
    547,382.18x = 230,895,097,798.33
  5. Step 5: Solve for x
    x = 230,895,097,798.33/547,382.18
  6. Step 6: Final answer
    x = 421,816.98

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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.