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Finding the Fourth Proportional to 274,552.34, 378,888.64 and 153,690.62

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Solution

The fourth proportional to 274,552.34, 378,888.64 and 153,690.62 is: 212,096.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,552.34 : 378,888.64 = 153,690.62 : x
  2. Step 2: Convert to fraction form
    274,552.34/378,888.64 = 153,690.62/x
  3. Step 3: Cross multiply
    274,552.34x = 378,888.64 × 153,690.62
  4. Step 4: Simplify right side
    274,552.34x = 58,231,627,713.89
  5. Step 5: Solve for x
    x = 58,231,627,713.89/274,552.34
  6. Step 6: Final answer
    x = 212,096.64

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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.