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Finding the Fourth Proportional to 274,967.42, 379,454.53 and 154,108.67

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Solution

The fourth proportional to 274,967.42, 379,454.53 and 154,108.67 is: 212,669.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,967.42 : 379,454.53 = 154,108.67 : x
  2. Step 2: Convert to fraction form
    274,967.42/379,454.53 = 154,108.67/x
  3. Step 3: Cross multiply
    274,967.42x = 379,454.53 × 154,108.67
  4. Step 4: Simplify right side
    274,967.42x = 58,477,232,943.78
  5. Step 5: Solve for x
    x = 58,477,232,943.78/274,967.42
  6. Step 6: Final answer
    x = 212,669.68

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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.