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Finding the Fourth Proportional to 608,402.80, 913,122.60 and 271,961.20

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Solution

The fourth proportional to 608,402.80, 913,122.60 and 271,961.20 is: 408,173.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,402.80 : 913,122.60 = 271,961.20 : x
  2. Step 2: Convert to fraction form
    608,402.80/913,122.60 = 271,961.20/x
  3. Step 3: Cross multiply
    608,402.80x = 913,122.60 × 271,961.20
  4. Step 4: Simplify right side
    608,402.80x = 248,333,918,043.12
  5. Step 5: Solve for x
    x = 248,333,918,043.12/608,402.80
  6. Step 6: Final answer
    x = 408,173.53

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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.