Home / 275,301.40-379,918.53-154,445.28

Finding the Fourth Proportional to 275,301.40, 379,918.53 and 154,445.28

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Solution

The fourth proportional to 275,301.40, 379,918.53 and 154,445.28 is: 213,135.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,301.40 : 379,918.53 = 154,445.28 : x
  2. Step 2: Convert to fraction form
    275,301.40/379,918.53 = 154,445.28/x
  3. Step 3: Cross multiply
    275,301.40x = 379,918.53 × 154,445.28
  4. Step 4: Simplify right side
    275,301.40x = 58,676,623,743.04
  5. Step 5: Solve for x
    x = 58,676,623,743.04/275,301.40
  6. Step 6: Final answer
    x = 213,135.94

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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.