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Finding the Fourth Proportional to 231,818.70, 347,533.65 and 121,010.70

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Solution

The fourth proportional to 231,818.70, 347,533.65 and 121,010.70 is: 181,414.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,818.70 : 347,533.65 = 121,010.70 : x
  2. Step 2: Convert to fraction form
    231,818.70/347,533.65 = 121,010.70/x
  3. Step 3: Cross multiply
    231,818.70x = 347,533.65 × 121,010.70
  4. Step 4: Simplify right side
    231,818.70x = 42,055,290,260.06
  5. Step 5: Solve for x
    x = 42,055,290,260.06/231,818.70
  6. Step 6: Final answer
    x = 181,414.57

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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.