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Finding the Fourth Proportional to 411,960.60, 618,329.70 and 254,496.60

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Solution

The fourth proportional to 411,960.60, 618,329.70 and 254,496.60 is: 381,985.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,960.60 : 618,329.70 = 254,496.60 : x
  2. Step 2: Convert to fraction form
    411,960.60/618,329.70 = 254,496.60/x
  3. Step 3: Cross multiply
    411,960.60x = 618,329.70 × 254,496.60
  4. Step 4: Simplify right side
    411,960.60x = 157,362,806,329.02
  5. Step 5: Solve for x
    x = 157,362,806,329.02/411,960.60
  6. Step 6: Final answer
    x = 381,985.09

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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.