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Finding the Fourth Proportional to 256,548.20, 384,239.10 and 162,069.80

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Solution

The fourth proportional to 256,548.20, 384,239.10 and 162,069.80 is: 242,736.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,548.20 : 384,239.10 = 162,069.80 : x
  2. Step 2: Convert to fraction form
    256,548.20/384,239.10 = 162,069.80/x
  3. Step 3: Cross multiply
    256,548.20x = 384,239.10 × 162,069.80
  4. Step 4: Simplify right side
    256,548.20x = 62,273,554,089.18
  5. Step 5: Solve for x
    x = 62,273,554,089.18/256,548.20
  6. Step 6: Final answer
    x = 242,736.27

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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.