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Finding the Fourth Proportional to 261,367.56, 391,873.92 and 132,968.28

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Solution

The fourth proportional to 261,367.56, 391,873.92 and 132,968.28 is: 199,362.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,367.56 : 391,873.92 = 132,968.28 : x
  2. Step 2: Convert to fraction form
    261,367.56/391,873.92 = 132,968.28/x
  3. Step 3: Cross multiply
    261,367.56x = 391,873.92 × 132,968.28
  4. Step 4: Simplify right side
    261,367.56x = 52,106,800,997.90
  5. Step 5: Solve for x
    x = 52,106,800,997.90/261,367.56
  6. Step 6: Final answer
    x = 199,362.16

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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.