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Finding the Fourth Proportional to 208,086.20, 312,129.30 and 173,094.20

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Solution

The fourth proportional to 208,086.20, 312,129.30 and 173,094.20 is: 259,641.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,086.20 : 312,129.30 = 173,094.20 : x
  2. Step 2: Convert to fraction form
    208,086.20/312,129.30 = 173,094.20/x
  3. Step 3: Cross multiply
    208,086.20x = 312,129.30 × 173,094.20
  4. Step 4: Simplify right side
    208,086.20x = 54,027,771,480.06
  5. Step 5: Solve for x
    x = 54,027,771,480.06/208,086.20
  6. Step 6: Final answer
    x = 259,641.30

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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.