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Finding the Fourth Proportional to 256,044.80, 384,067.20 and 89,832.80

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Solution

The fourth proportional to 256,044.80, 384,067.20 and 89,832.80 is: 134,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,044.80 : 384,067.20 = 89,832.80 : x
  2. Step 2: Convert to fraction form
    256,044.80/384,067.20 = 89,832.80/x
  3. Step 3: Cross multiply
    256,044.80x = 384,067.20 × 89,832.80
  4. Step 4: Simplify right side
    256,044.80x = 34,501,831,964.16
  5. Step 5: Solve for x
    x = 34,501,831,964.16/256,044.80
  6. Step 6: Final answer
    x = 134,749.20

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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.