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Finding the Fourth Proportional to 272,057.20, 408,085.80 and 188,076.40

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Solution

The fourth proportional to 272,057.20, 408,085.80 and 188,076.40 is: 282,114.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,057.20 : 408,085.80 = 188,076.40 : x
  2. Step 2: Convert to fraction form
    272,057.20/408,085.80 = 188,076.40/x
  3. Step 3: Cross multiply
    272,057.20x = 408,085.80 × 188,076.40
  4. Step 4: Simplify right side
    272,057.20x = 76,751,308,155.12
  5. Step 5: Solve for x
    x = 76,751,308,155.12/272,057.20
  6. Step 6: Final answer
    x = 282,114.60

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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.