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Finding the Fourth Proportional to 547,593.18, 755,656.47 and 305,871.90

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Solution

The fourth proportional to 547,593.18, 755,656.47 and 305,871.90 is: 422,090.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,593.18 : 755,656.47 = 305,871.90 : x
  2. Step 2: Convert to fraction form
    547,593.18/755,656.47 = 305,871.90/x
  3. Step 3: Cross multiply
    547,593.18x = 755,656.47 × 305,871.90
  4. Step 4: Simplify right side
    547,593.18x = 231,134,080,226.19
  5. Step 5: Solve for x
    x = 231,134,080,226.19/547,593.18
  6. Step 6: Final answer
    x = 422,090.87

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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.