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Finding the Fourth Proportional to 476,436.50, 657,540.78 and 275,232.50

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Solution

The fourth proportional to 476,436.50, 657,540.78 and 275,232.50 is: 379,854.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,436.50 : 657,540.78 = 275,232.50 : x
  2. Step 2: Convert to fraction form
    476,436.50/657,540.78 = 275,232.50/x
  3. Step 3: Cross multiply
    476,436.50x = 657,540.78 × 275,232.50
  4. Step 4: Simplify right side
    476,436.50x = 180,976,592,731.35
  5. Step 5: Solve for x
    x = 180,976,592,731.35/476,436.50
  6. Step 6: Final answer
    x = 379,854.59

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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.