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Finding the Fourth Proportional to 254,419.39, 381,673.06 and 85,940.94

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Solution

The fourth proportional to 254,419.39, 381,673.06 and 85,940.94 is: 128,926.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,419.39 : 381,673.06 = 85,940.94 : x
  2. Step 2: Convert to fraction form
    254,419.39/381,673.06 = 85,940.94/x
  3. Step 3: Cross multiply
    254,419.39x = 381,673.06 × 85,940.94
  4. Step 4: Simplify right side
    254,419.39x = 32,801,341,549.08
  5. Step 5: Solve for x
    x = 32,801,341,549.08/254,419.39
  6. Step 6: Final answer
    x = 128,926.26

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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.