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Finding the Fourth Proportional to 274,901.40, 379,360.80 and 154,047.60

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Solution

The fourth proportional to 274,901.40, 379,360.80 and 154,047.60 is: 212,583.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,901.40 : 379,360.80 = 154,047.60 : x
  2. Step 2: Convert to fraction form
    274,901.40/379,360.80 = 154,047.60/x
  3. Step 3: Cross multiply
    274,901.40x = 379,360.80 × 154,047.60
  4. Step 4: Simplify right side
    274,901.40x = 58,439,620,774.08
  5. Step 5: Solve for x
    x = 58,439,620,774.08/274,901.40
  6. Step 6: Final answer
    x = 212,583.93

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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.