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Finding the Fourth Proportional to 466,551.12, 643,618.80 and 275,436.48

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Solution

The fourth proportional to 466,551.12, 643,618.80 and 275,436.48 is: 379,971.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    466,551.12 : 643,618.80 = 275,436.48 : x
  2. Step 2: Convert to fraction form
    466,551.12/643,618.80 = 275,436.48/x
  3. Step 3: Cross multiply
    466,551.12x = 643,618.80 × 275,436.48
  4. Step 4: Simplify right side
    466,551.12x = 177,276,096,733.82
  5. Step 5: Solve for x
    x = 177,276,096,733.82/466,551.12
  6. Step 6: Final answer
    x = 379,971.43

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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.