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Finding the Fourth Proportional to 262,996.80, 394,495.20 and 157,761.60

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Solution

The fourth proportional to 262,996.80, 394,495.20 and 157,761.60 is: 236,642.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,996.80 : 394,495.20 = 157,761.60 : x
  2. Step 2: Convert to fraction form
    262,996.80/394,495.20 = 157,761.60/x
  3. Step 3: Cross multiply
    262,996.80x = 394,495.20 × 157,761.60
  4. Step 4: Simplify right side
    262,996.80x = 62,236,193,944.32
  5. Step 5: Solve for x
    x = 62,236,193,944.32/262,996.80
  6. Step 6: Final answer
    x = 236,642.40

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1.5x scale

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.