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Finding the Fourth Proportional to 395,040.57, 545,152.05 and 213,748.52

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Solution

The fourth proportional to 395,040.57, 545,152.05 and 213,748.52 is: 294,970.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,040.57 : 545,152.05 = 213,748.52 : x
  2. Step 2: Convert to fraction form
    395,040.57/545,152.05 = 213,748.52/x
  3. Step 3: Cross multiply
    395,040.57x = 545,152.05 × 213,748.52
  4. Step 4: Simplify right side
    395,040.57x = 116,525,440,067.96
  5. Step 5: Solve for x
    x = 116,525,440,067.96/395,040.57
  6. Step 6: Final answer
    x = 294,970.82

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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.