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Finding the Fourth Proportional to 312,422.13, 430,820.00 and 267,249.65

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Solution

The fourth proportional to 312,422.13, 430,820.00 and 267,249.65 is: 368,528.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,422.13 : 430,820.00 = 267,249.65 : x
  2. Step 2: Convert to fraction form
    312,422.13/430,820.00 = 267,249.65/x
  3. Step 3: Cross multiply
    312,422.13x = 430,820.00 × 267,249.65
  4. Step 4: Simplify right side
    312,422.13x = 115,136,491,724.84
  5. Step 5: Solve for x
    x = 115,136,491,724.84/312,422.13
  6. Step 6: Final answer
    x = 368,528.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.