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Finding the Fourth Proportional to 395,212.77, 545,251.91 and 225,348.48

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Solution

The fourth proportional to 395,212.77, 545,251.91 and 225,348.48 is: 310,900.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,212.77 : 545,251.91 = 225,348.48 : x
  2. Step 2: Convert to fraction form
    395,212.77/545,251.91 = 225,348.48/x
  3. Step 3: Cross multiply
    395,212.77x = 545,251.91 × 225,348.48
  4. Step 4: Simplify right side
    395,212.77x = 122,871,688,008.85
  5. Step 5: Solve for x
    x = 122,871,688,008.85/395,212.77
  6. Step 6: Final answer
    x = 310,900.10

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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.