Home / 547,192.78-755,047.95-305,470.05

Finding the Fourth Proportional to 547,192.78, 755,047.95 and 305,470.05

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Solution

The fourth proportional to 547,192.78, 755,047.95 and 305,470.05 is: 421,505.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,192.78 : 755,047.95 = 305,470.05 : x
  2. Step 2: Convert to fraction form
    547,192.78/755,047.95 = 305,470.05/x
  3. Step 3: Cross multiply
    547,192.78x = 755,047.95 × 305,470.05
  4. Step 4: Simplify right side
    547,192.78x = 230,644,531,061.96
  5. Step 5: Solve for x
    x = 230,644,531,061.96/547,192.78
  6. Step 6: Final answer
    x = 421,505.07

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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.