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Finding the Fourth Proportional to 254,681.60, 381,244.80 and 198,694.40

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Solution

The fourth proportional to 254,681.60, 381,244.80 and 198,694.40 is: 297,434.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,681.60 : 381,244.80 = 198,694.40 : x
  2. Step 2: Convert to fraction form
    254,681.60/381,244.80 = 198,694.40/x
  3. Step 3: Cross multiply
    254,681.60x = 381,244.80 × 198,694.40
  4. Step 4: Simplify right side
    254,681.60x = 75,751,206,789.12
  5. Step 5: Solve for x
    x = 75,751,206,789.12/254,681.60
  6. Step 6: Final answer
    x = 297,434.94

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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.