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Finding the Fourth Proportional to 274,959.39, 379,459.10 and 154,139.52

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Solution

The fourth proportional to 274,959.39, 379,459.10 and 154,139.52 is: 212,721.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,959.39 : 379,459.10 = 154,139.52 : x
  2. Step 2: Convert to fraction form
    274,959.39/379,459.10 = 154,139.52/x
  3. Step 3: Cross multiply
    274,959.39x = 379,459.10 × 154,139.52
  4. Step 4: Simplify right side
    274,959.39x = 58,489,642,762.93
  5. Step 5: Solve for x
    x = 58,489,642,762.93/274,959.39
  6. Step 6: Final answer
    x = 212,721.02

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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.