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Finding the Fourth Proportional to 345,987.30, 477,462.69 and 193,025.49

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Solution

The fourth proportional to 345,987.30, 477,462.69 and 193,025.49 is: 266,375.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,987.30 : 477,462.69 = 193,025.49 : x
  2. Step 2: Convert to fraction form
    345,987.30/477,462.69 = 193,025.49/x
  3. Step 3: Cross multiply
    345,987.30x = 477,462.69 × 193,025.49
  4. Step 4: Simplify right side
    345,987.30x = 92,162,469,693.97
  5. Step 5: Solve for x
    x = 92,162,469,693.97/345,987.30
  6. Step 6: Final answer
    x = 266,375.30

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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.