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Finding the Fourth Proportional to 454,412.40, 681,618.60 and 134,575.80

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Solution

The fourth proportional to 454,412.40, 681,618.60 and 134,575.80 is: 201,863.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,412.40 : 681,618.60 = 134,575.80 : x
  2. Step 2: Convert to fraction form
    454,412.40/681,618.60 = 134,575.80/x
  3. Step 3: Cross multiply
    454,412.40x = 681,618.60 × 134,575.80
  4. Step 4: Simplify right side
    454,412.40x = 91,729,368,389.88
  5. Step 5: Solve for x
    x = 91,729,368,389.88/454,412.40
  6. Step 6: Final answer
    x = 201,863.70

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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.