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Finding the Fourth Proportional to 395,045.06, 545,161.08 and 213,760.06

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Solution

The fourth proportional to 395,045.06, 545,161.08 and 213,760.06 is: 294,988.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,045.06 : 545,161.08 = 213,760.06 : x
  2. Step 2: Convert to fraction form
    395,045.06/545,161.08 = 213,760.06/x
  3. Step 3: Cross multiply
    395,045.06x = 545,161.08 × 213,760.06
  4. Step 4: Simplify right side
    395,045.06x = 116,533,665,170.47
  5. Step 5: Solve for x
    x = 116,533,665,170.47/395,045.06
  6. Step 6: Final answer
    x = 294,988.29

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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.