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Finding the Fourth Proportional to 275,230.51, 379,787.74 and 154,346.92

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Solution

The fourth proportional to 275,230.51, 379,787.74 and 154,346.92 is: 212,981.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,230.51 : 379,787.74 = 154,346.92 : x
  2. Step 2: Convert to fraction form
    275,230.51/379,787.74 = 154,346.92/x
  3. Step 3: Cross multiply
    275,230.51x = 379,787.74 × 154,346.92
  4. Step 4: Simplify right side
    275,230.51x = 58,619,066,587.42
  5. Step 5: Solve for x
    x = 58,619,066,587.42/275,230.51
  6. Step 6: Final answer
    x = 212,981.72

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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.