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Finding the Fourth Proportional to 551,266.48, 760,755.72 and 309,601.36

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Solution

The fourth proportional to 551,266.48, 760,755.72 and 309,601.36 is: 427,254.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,266.48 : 760,755.72 = 309,601.36 : x
  2. Step 2: Convert to fraction form
    551,266.48/760,755.72 = 309,601.36/x
  3. Step 3: Cross multiply
    551,266.48x = 760,755.72 × 309,601.36
  4. Step 4: Simplify right side
    551,266.48x = 235,531,005,539.78
  5. Step 5: Solve for x
    x = 235,531,005,539.78/551,266.48
  6. Step 6: Final answer
    x = 427,254.36

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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.