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Finding the Fourth Proportional to 230,555.25, 318,166.25 and 129,953.25

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Solution

The fourth proportional to 230,555.25, 318,166.25 and 129,953.25 is: 179,335.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,555.25 : 318,166.25 = 129,953.25 : x
  2. Step 2: Convert to fraction form
    230,555.25/318,166.25 = 129,953.25/x
  3. Step 3: Cross multiply
    230,555.25x = 318,166.25 × 129,953.25
  4. Step 4: Simplify right side
    230,555.25x = 41,346,737,578.05
  5. Step 5: Solve for x
    x = 41,346,737,578.05/230,555.25
  6. Step 6: Final answer
    x = 179,335.49

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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.