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Finding the Fourth Proportional to 312,350.44, 431,042.98 and 169,110.60

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Solution

The fourth proportional to 312,350.44, 431,042.98 and 169,110.60 is: 233,372.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,350.44 : 431,042.98 = 169,110.60 : x
  2. Step 2: Convert to fraction form
    312,350.44/431,042.98 = 169,110.60/x
  3. Step 3: Cross multiply
    312,350.44x = 431,042.98 × 169,110.60
  4. Step 4: Simplify right side
    312,350.44x = 72,893,936,973.59
  5. Step 5: Solve for x
    x = 72,893,936,973.59/312,350.44
  6. Step 6: Final answer
    x = 233,372.29

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1.5x scale

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.