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Finding the Fourth Proportional to 385,326.78, 577,840.41 and 132,559.26

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Solution

The fourth proportional to 385,326.78, 577,840.41 and 132,559.26 is: 198,787.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,326.78 : 577,840.41 = 132,559.26 : x
  2. Step 2: Convert to fraction form
    385,326.78/577,840.41 = 132,559.26/x
  3. Step 3: Cross multiply
    385,326.78x = 577,840.41 × 132,559.26
  4. Step 4: Simplify right side
    385,326.78x = 76,598,097,147.70
  5. Step 5: Solve for x
    x = 76,598,097,147.70/385,326.78
  6. Step 6: Final answer
    x = 198,787.37

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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.