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Finding the Fourth Proportional to 242,867.60, 364,034.10 and 85,014.80

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Solution

The fourth proportional to 242,867.60, 364,034.10 and 85,014.80 is: 127,428.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,867.60 : 364,034.10 = 85,014.80 : x
  2. Step 2: Convert to fraction form
    242,867.60/364,034.10 = 85,014.80/x
  3. Step 3: Cross multiply
    242,867.60x = 364,034.10 × 85,014.80
  4. Step 4: Simplify right side
    242,867.60x = 30,948,286,204.68
  5. Step 5: Solve for x
    x = 30,948,286,204.68/242,867.60
  6. Step 6: Final answer
    x = 127,428.63

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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.