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Finding the Fourth Proportional to 274,859.66, 379,280.66 and 153,975.31

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Solution

The fourth proportional to 274,859.66, 379,280.66 and 153,975.31 is: 212,471.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,859.66 : 379,280.66 = 153,975.31 : x
  2. Step 2: Convert to fraction form
    274,859.66/379,280.66 = 153,975.31/x
  3. Step 3: Cross multiply
    274,859.66x = 379,280.66 × 153,975.31
  4. Step 4: Simplify right side
    274,859.66x = 58,399,854,534.22
  5. Step 5: Solve for x
    x = 58,399,854,534.22/274,859.66
  6. Step 6: Final answer
    x = 212,471.54

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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.