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Finding the Fourth Proportional to 254,777.82, 381,878.37 and 128,216.94

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Solution

The fourth proportional to 254,777.82, 381,878.37 and 128,216.94 is: 192,180.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,777.82 : 381,878.37 = 128,216.94 : x
  2. Step 2: Convert to fraction form
    254,777.82/381,878.37 = 128,216.94/x
  3. Step 3: Cross multiply
    254,777.82x = 381,878.37 × 128,216.94
  4. Step 4: Simplify right side
    254,777.82x = 48,963,276,053.59
  5. Step 5: Solve for x
    x = 48,963,276,053.59/254,777.82
  6. Step 6: Final answer
    x = 192,180.29

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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.