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Finding the Fourth Proportional to 476,229.94, 657,205.34 and 261,390

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Solution

The fourth proportional to 476,229.94, 657,205.34 and 261,390 is: 360,722.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,229.94 : 657,205.34 = 261,390 : x
  2. Step 2: Convert to fraction form
    476,229.94/657,205.34 = 261,390/x
  3. Step 3: Cross multiply
    476,229.94x = 657,205.34 × 261,390
  4. Step 4: Simplify right side
    476,229.94x = 171,786,903,822.60
  5. Step 5: Solve for x
    x = 171,786,903,822.60/476,229.94
  6. Step 6: Final answer
    x = 360,722.60

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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.