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Finding the Fourth Proportional to 361,013.07, 541,602.66 and 121,158.80

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Solution

The fourth proportional to 361,013.07, 541,602.66 and 121,158.80 is: 181,766.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,013.07 : 541,602.66 = 121,158.80 : x
  2. Step 2: Convert to fraction form
    361,013.07/541,602.66 = 121,158.80/x
  3. Step 3: Cross multiply
    361,013.07x = 541,602.66 × 121,158.80
  4. Step 4: Simplify right side
    361,013.07x = 65,619,925,654.39
  5. Step 5: Solve for x
    x = 65,619,925,654.39/361,013.07
  6. Step 6: Final answer
    x = 181,766.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.