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Finding the Fourth Proportional to 230,998.61, 318,755.57 and 129,015.96

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Solution

The fourth proportional to 230,998.61, 318,755.57 and 129,015.96 is: 178,029.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,998.61 : 318,755.57 = 129,015.96 : x
  2. Step 2: Convert to fraction form
    230,998.61/318,755.57 = 129,015.96/x
  3. Step 3: Cross multiply
    230,998.61x = 318,755.57 × 129,015.96
  4. Step 4: Simplify right side
    230,998.61x = 41,124,555,223.82
  5. Step 5: Solve for x
    x = 41,124,555,223.82/230,998.61
  6. Step 6: Final answer
    x = 178,029.45

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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.