Home / 220,515.10-304,310.86-125,021.80

Finding the Fourth Proportional to 220,515.10, 304,310.86 and 125,021.80

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Solution

The fourth proportional to 220,515.10, 304,310.86 and 125,021.80 is: 172,530.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,515.10 : 304,310.86 = 125,021.80 : x
  2. Step 2: Convert to fraction form
    220,515.10/304,310.86 = 125,021.80/x
  3. Step 3: Cross multiply
    220,515.10x = 304,310.86 × 125,021.80
  4. Step 4: Simplify right side
    220,515.10x = 38,045,491,476.75
  5. Step 5: Solve for x
    x = 38,045,491,476.75/220,515.10
  6. Step 6: Final answer
    x = 172,530.10

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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.