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Finding the Fourth Proportional to 270,480.80, 405,778.80 and 83,511.20

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Solution

The fourth proportional to 270,480.80, 405,778.80 and 83,511.20 is: 125,284.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,480.80 : 405,778.80 = 83,511.20 : x
  2. Step 2: Convert to fraction form
    270,480.80/405,778.80 = 83,511.20/x
  3. Step 3: Cross multiply
    270,480.80x = 405,778.80 × 83,511.20
  4. Step 4: Simplify right side
    270,480.80x = 33,887,074,522.56
  5. Step 5: Solve for x
    x = 33,887,074,522.56/270,480.80
  6. Step 6: Final answer
    x = 125,284.58

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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.