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Finding the Fourth Proportional to 275,326.05, 379,955.80 and 154,476.07

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Solution

The fourth proportional to 275,326.05, 379,955.80 and 154,476.07 is: 213,180.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,326.05 : 379,955.80 = 154,476.07 : x
  2. Step 2: Convert to fraction form
    275,326.05/379,955.80 = 154,476.07/x
  3. Step 3: Cross multiply
    275,326.05x = 379,955.80 × 154,476.07
  4. Step 4: Simplify right side
    275,326.05x = 58,694,078,935.22
  5. Step 5: Solve for x
    x = 58,694,078,935.22/275,326.05
  6. Step 6: Final answer
    x = 213,180.26

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1.5x scale

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.