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Finding the Fourth Proportional to 547,667.36, 755,753.92 and 305,901.80

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Solution

The fourth proportional to 547,667.36, 755,753.92 and 305,901.80 is: 422,129.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,667.36 : 755,753.92 = 305,901.80 : x
  2. Step 2: Convert to fraction form
    547,667.36/755,753.92 = 305,901.80/x
  3. Step 3: Cross multiply
    547,667.36x = 755,753.92 × 305,901.80
  4. Step 4: Simplify right side
    547,667.36x = 231,186,484,485.06
  5. Step 5: Solve for x
    x = 231,186,484,485.06/547,667.36
  6. Step 6: Final answer
    x = 422,129.38

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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.