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Finding the Fourth Proportional to 209,959.60, 314,939.40 and 131,227.60

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Solution

The fourth proportional to 209,959.60, 314,939.40 and 131,227.60 is: 196,841.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,959.60 : 314,939.40 = 131,227.60 : x
  2. Step 2: Convert to fraction form
    209,959.60/314,939.40 = 131,227.60/x
  3. Step 3: Cross multiply
    209,959.60x = 314,939.40 × 131,227.60
  4. Step 4: Simplify right side
    209,959.60x = 41,328,741,607.44
  5. Step 5: Solve for x
    x = 41,328,741,607.44/209,959.60
  6. Step 6: Final answer
    x = 196,841.40

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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.