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Finding the Fourth Proportional to 395,040.35, 545,151.80 and 213,748.31

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Solution

The fourth proportional to 395,040.35, 545,151.80 and 213,748.31 is: 294,970.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,040.35 : 545,151.80 = 213,748.31 : x
  2. Step 2: Convert to fraction form
    395,040.35/545,151.80 = 213,748.31/x
  3. Step 3: Cross multiply
    395,040.35x = 545,151.80 × 213,748.31
  4. Step 4: Simplify right side
    395,040.35x = 116,525,277,840.71
  5. Step 5: Solve for x
    x = 116,525,277,840.71/395,040.35
  6. Step 6: Final answer
    x = 294,970.57

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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.