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Finding the Fourth Proportional to 547,415.36, 755,404.32 and 308,936

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Solution

The fourth proportional to 547,415.36, 755,404.32 and 308,936 is: 426,315.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,415.36 : 755,404.32 = 308,936 : x
  2. Step 2: Convert to fraction form
    547,415.36/755,404.32 = 308,936/x
  3. Step 3: Cross multiply
    547,415.36x = 755,404.32 × 308,936
  4. Step 4: Simplify right side
    547,415.36x = 233,371,589,003.52
  5. Step 5: Solve for x
    x = 233,371,589,003.52/547,415.36
  6. Step 6: Final answer
    x = 426,315.38

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1.5x scale

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.