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Finding the Fourth Proportional to 501,398.25, 691,929.72 and 275,043.75

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Solution

The fourth proportional to 501,398.25, 691,929.72 and 275,043.75 is: 379,560.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,398.25 : 691,929.72 = 275,043.75 : x
  2. Step 2: Convert to fraction form
    501,398.25/691,929.72 = 275,043.75/x
  3. Step 3: Cross multiply
    501,398.25x = 691,929.72 × 275,043.75
  4. Step 4: Simplify right side
    501,398.25x = 190,310,944,925.25
  5. Step 5: Solve for x
    x = 190,310,944,925.25/501,398.25
  6. Step 6: Final answer
    x = 379,560.45

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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.