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Finding the Fourth Proportional to 274,219.20, 411,021.60 and 155,947.20

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Solution

The fourth proportional to 274,219.20, 411,021.60 and 155,947.20 is: 233,746.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,219.20 : 411,021.60 = 155,947.20 : x
  2. Step 2: Convert to fraction form
    274,219.20/411,021.60 = 155,947.20/x
  3. Step 3: Cross multiply
    274,219.20x = 411,021.60 × 155,947.20
  4. Step 4: Simplify right side
    274,219.20x = 64,097,667,659.52
  5. Step 5: Solve for x
    x = 64,097,667,659.52/274,219.20
  6. Step 6: Final answer
    x = 233,746.10

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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.