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Finding the Fourth Proportional to 404,787.52, 607,191 and 138,546.28

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Solution

The fourth proportional to 404,787.52, 607,191 and 138,546.28 is: 207,822.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,787.52 : 607,191 = 138,546.28 : x
  2. Step 2: Convert to fraction form
    404,787.52/607,191 = 138,546.28/x
  3. Step 3: Cross multiply
    404,787.52x = 607,191 × 138,546.28
  4. Step 4: Simplify right side
    404,787.52x = 84,124,054,299.48
  5. Step 5: Solve for x
    x = 84,124,054,299.48/404,787.52
  6. Step 6: Final answer
    x = 207,822.75

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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.