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Finding the Fourth Proportional to 274,631.60, 411,947.40 and 97,144.40

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Solution

The fourth proportional to 274,631.60, 411,947.40 and 97,144.40 is: 145,716.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,631.60 : 411,947.40 = 97,144.40 : x
  2. Step 2: Convert to fraction form
    274,631.60/411,947.40 = 97,144.40/x
  3. Step 3: Cross multiply
    274,631.60x = 411,947.40 × 97,144.40
  4. Step 4: Simplify right side
    274,631.60x = 40,018,383,004.56
  5. Step 5: Solve for x
    x = 40,018,383,004.56/274,631.60
  6. Step 6: Final answer
    x = 145,716.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.