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Finding the Fourth Proportional to 274,809.07, 379,216.74 and 153,929.92

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Solution

The fourth proportional to 274,809.07, 379,216.74 and 153,929.92 is: 212,412.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,809.07 : 379,216.74 = 153,929.92 : x
  2. Step 2: Convert to fraction form
    274,809.07/379,216.74 = 153,929.92/x
  3. Step 3: Cross multiply
    274,809.07x = 379,216.74 × 153,929.92
  4. Step 4: Simplify right side
    274,809.07x = 58,372,802,450.86
  5. Step 5: Solve for x
    x = 58,372,802,450.86/274,809.07
  6. Step 6: Final answer
    x = 212,412.21

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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.