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Finding the Fourth Proportional to 551,328.73, 760,781.36 and 309,563.98

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Solution

The fourth proportional to 551,328.73, 760,781.36 and 309,563.98 is: 427,168.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,328.73 : 760,781.36 = 309,563.98 : x
  2. Step 2: Convert to fraction form
    551,328.73/760,781.36 = 309,563.98/x
  3. Step 3: Cross multiply
    551,328.73x = 760,781.36 × 309,563.98
  4. Step 4: Simplify right side
    551,328.73x = 235,510,504,583.37
  5. Step 5: Solve for x
    x = 235,510,504,583.37/551,328.73
  6. Step 6: Final answer
    x = 427,168.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.