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Finding the Fourth Proportional to 303,914.80, 455,270.77 and 266,517.10

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Solution

The fourth proportional to 303,914.80, 455,270.77 and 266,517.10 is: 399,248.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,914.80 : 455,270.77 = 266,517.10 : x
  2. Step 2: Convert to fraction form
    303,914.80/455,270.77 = 266,517.10/x
  3. Step 3: Cross multiply
    303,914.80x = 455,270.77 × 266,517.10
  4. Step 4: Simplify right side
    303,914.80x = 121,337,445,335.17
  5. Step 5: Solve for x
    x = 121,337,445,335.17/303,914.80
  6. Step 6: Final answer
    x = 399,248.23

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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.