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Finding the Fourth Proportional to 274,799.84, 379,216.94 and 153,940.32

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Solution

The fourth proportional to 274,799.84, 379,216.94 and 153,940.32 is: 212,433.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,799.84 : 379,216.94 = 153,940.32 : x
  2. Step 2: Convert to fraction form
    274,799.84/379,216.94 = 153,940.32/x
  3. Step 3: Cross multiply
    274,799.84x = 379,216.94 × 153,940.32
  4. Step 4: Simplify right side
    274,799.84x = 58,376,776,323.32
  5. Step 5: Solve for x
    x = 58,376,776,323.32/274,799.84
  6. Step 6: Final answer
    x = 212,433.81

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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.