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Finding the Fourth Proportional to 411,995.60, 618,382.20 and 254,531.60

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Solution

The fourth proportional to 411,995.60, 618,382.20 and 254,531.60 is: 382,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,995.60 : 618,382.20 = 254,531.60 : x
  2. Step 2: Convert to fraction form
    411,995.60/618,382.20 = 254,531.60/x
  3. Step 3: Cross multiply
    411,995.60x = 618,382.20 × 254,531.60
  4. Step 4: Simplify right side
    411,995.60x = 157,397,810,777.52
  5. Step 5: Solve for x
    x = 157,397,810,777.52/411,995.60
  6. Step 6: Final answer
    x = 382,037.60

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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.