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Finding the Fourth Proportional to 254,614.80, 381,963.48 and 86,145.36

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Solution

The fourth proportional to 254,614.80, 381,963.48 and 86,145.36 is: 129,232.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,614.80 : 381,963.48 = 86,145.36 : x
  2. Step 2: Convert to fraction form
    254,614.80/381,963.48 = 86,145.36/x
  3. Step 3: Cross multiply
    254,614.80x = 381,963.48 × 86,145.36
  4. Step 4: Simplify right side
    254,614.80x = 32,904,381,491.45
  5. Step 5: Solve for x
    x = 32,904,381,491.45/254,614.80
  6. Step 6: Final answer
    x = 129,232.01

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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.