Home / 208,515.03-287,757.53-115,381.80

Finding the Fourth Proportional to 208,515.03, 287,757.53 and 115,381.80

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Solution

The fourth proportional to 208,515.03, 287,757.53 and 115,381.80 is: 159,230.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,515.03 : 287,757.53 = 115,381.80 : x
  2. Step 2: Convert to fraction form
    208,515.03/287,757.53 = 115,381.80/x
  3. Step 3: Cross multiply
    208,515.03x = 287,757.53 × 115,381.80
  4. Step 4: Simplify right side
    208,515.03x = 33,201,981,630.73
  5. Step 5: Solve for x
    x = 33,201,981,630.73/208,515.03
  6. Step 6: Final answer
    x = 159,230.64

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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.